ASTROSAT CZTI

Data Quality Report

Orbit 20220911_A07_093T23_9000005340_level2

Creation date: 2022-09-13T12:52:54.681393
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_093T23_9000005340cztM0_level2_bc.evt modeM0/AS1A07_093T23_9000005340cztM0_level2_quad_clean.evt
Size (bytes)286,764,480104,875,200
Size273.5 MB 100.0 MB
Events in quadrant A1,922,319693,888
Events in quadrant B1,898,472694,172
Events in quadrant C1,844,515681,341
Events in quadrant D2,525,444609,512

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153270
B0159460
C0149240
D0197130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7142130.182022%
B71421682.352282%
C7142230.322039%
D71424896.846822%

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 11147 7144 0 0 0.00% 0.00%
B 11147 7137 0 0 0.00% 0.00%
C 11147 7142 6 6 0.05% 0.08%
D 11147 7142 23 23 0.21% 0.32%

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 359011 4113.44 384 378 87.2
A 13 6 22680 255.8 384 378 87.2
A 13 248 19092 214.65 384 378 87.2
B 5 172 192739 2457.97 385 376 78.3
B 0 230 59411 754.34 385 376 78.3
B 5 200 43717 553.8 385 376 78.3
C 15 214 287455 3340.44 371 369 85.9
C 0 10 75392 872.94 371 369 85.9
C 14 254 24810 284.39 371 369 85.9
D 2 249 558904 6624.45 356 345 84.3
D 2 250 189052 2238.04 356 345 84.3
D 12 227 107413 1269.82 356 345 84.3

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