ASTROSAT CZTI

Data Quality Report

Orbit 34985

Creation date: 2022-03-19T18:53:42.887808
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/AS1A10_123T11_9000005014_34985cztM0_level2.evt modeM0/AS1A10_123T11_9000005014_34985cztM0_level2_quad_clean.evt
Size (bytes)233,493,12045,754,560
Size222.7 MB 43.6 MB
Events in quadrant A1,361,540298,799
Events in quadrant B1,628,364303,043
Events in quadrant C1,506,576304,672
Events in quadrant D2,390,949286,350

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058302
B066001
C061801
D089561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A268520.074488%
B2685542.011173%
C2685281.042831%
D2685813.016760%

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 4598 2686 0 0 0.00% 0.00%
B 4598 2686 34 34 0.74% 1.27%
C 4598 2686 20 20 0.43% 0.74%
D 4598 2686 55 55 1.20% 2.05%

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 10 83 38175 541.73 338 332 69.9
A 9 143 8660 119.22 338 332 69.9
A 13 6 6147 83.24 338 332 69.9
B 5 172 252899 3889.57 336 328 64.9
B 0 155 32761 499.47 336 328 64.9
B 12 111 7715 113.76 336 328 64.9
C 15 214 112955 1454.37 333 335 77.4
C 0 10 72996 938.34 333 335 77.4
C 14 67 14289 180.2 333 335 77.4
D 8 195 789135 9685.28 329 320 81.4
D 2 249 137012 1678.34 329 320 81.4
D 10 118 83480 1021.06 329 320 81.4

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