ASTROSAT CZTI

Data Quality Report

Orbit 20200527_A07_097T01_9000003692_level2

Creation date: 2021-08-31T04:40:03.726798
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_097T01_9000003692cztM0_level2_bc.evt modeM0/AS1A07_097T01_9000003692cztM0_level2_quad_clean.evt
Size (bytes)9,538,741,4402,746,267,200
Size8.9 GB 2.6 GB
Events in quadrant A47,864,59217,600,526
Events in quadrant B54,700,69517,496,148
Events in quadrant C70,267,55516,745,188
Events in quadrant D101,337,76916,518,318

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04579320
B04927310
C05368120
D06491270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044100
B044100
C044100
D044100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03570
B03570
C03570
D03570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21637824511.132740%
B21637869353.205039%
C216378104044.808252%
D216378130086.011702%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 252264 216382 2 2 0.00% 0.00%
B 252264 216371 138 138 0.05% 0.06%
C 252264 216382 2590 2590 1.03% 1.20%
D 252264 216379 2193 2193 0.87% 1.01%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 323186 120.21 12262 12082 2587.9
A 6 16 288467 106.8 12262 12082 2587.9
A 3 1 164330 58.83 12262 12082 2587.9
B 3 64 6244132 2768.68 12142 11877 2251.0
B 0 190 686123 299.53 12142 11877 2251.0
B 10 251 246184 104.09 12142 11877 2251.0
C 0 239 11245186 4196.29 11528 11512 2677.0
C 7 247 11069431 4130.64 11528 11512 2677.0
C 2 16 2803578 1042.97 11528 11512 2677.0
D 1 52 17931168 6075.39 11697 11370 2949.6
D 8 195 15533025 5262.34 11697 11370 2949.6
D 10 70 8427314 2853.28 11697 11370 2949.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter