ASTROSAT CZTI

Data Quality Report

Orbit 20220819_A10_094T11_9000005294_level2

Creation date: 2022-08-22T16:50:25.781588
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_094T11_9000005294cztM0_level2_bc.evt modeM0/AS1A10_094T11_9000005294cztM0_level2_quad_clean.evt
Size (bytes)283,965,120136,967,040
Size270.8 MB 130.6 MB
Events in quadrant A2,116,161910,168
Events in quadrant B1,762,658933,765
Events in quadrant C1,946,978927,526
Events in quadrant D2,297,766897,257

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164340
B0153670
C0154790
D0172650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68931241.798926%
B6893390.565791%
C6893540.783403%
D68931462.118091%

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 8236 6894 8 8 0.10% 0.12%
B 8236 6894 3 3 0.04% 0.04%
C 8236 6893 9 9 0.11% 0.13%
D 8236 6893 20 20 0.24% 0.29%

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 232907 2324.38 398 394 100.0
A 13 248 134943 1345.06 398 394 100.0
A 15 237 102371 1019.44 398 394 100.0
B 0 190 81532 963.11 370 361 84.3
B 0 230 77599 916.44 370 361 84.3
B 0 213 68720 811.09 370 361 84.3
C 15 214 269746 2927.69 357 354 92.0
C 14 254 166867 1809.62 357 354 92.0
C 0 10 81882 886.03 357 354 92.0
D 2 153 157338 1521.89 384 374 103.1
D 10 253 145239 1404.58 384 374 103.1
D 12 218 104234 1007.01 384 374 103.1

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