ASTROSAT CZTI

Data Quality Report

Orbit 20220314_A11_065T12_9000005004_level2

Creation date: 2026-01-01T23:51:53.965504
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/AS1A11_065T12_9000005004cztM0_level2.fits modeM0/AS1A11_065T12_9000005004cztM0_level2_quad_clean.evt
Size (bytes)295,954,560291,335,040
Size282.2 MB 277.8 MB
Events in quadrant A1,652,1501,593,739
Events in quadrant B1,749,5741,786,926
Events in quadrant C1,804,8661,724,351
Events in quadrant D1,516,5481,480,618

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06640
B06640
C06640
D06640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01278120
B0796350
C0720800
D0958450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A32549585217.979047%
B325499352.872592%
C325494231.299579%
D3254913414.119942%

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 44755 31980 0 0 0.00% 0.00%
B 44770 32532 0 0 0.00% 0.00%
C 44770 32546 0 0 0.00% 0.00%
D 44770 32518 0 0 0.00% 0.00%

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 0 29 1392 9.13 431 405 108.1
A 7 110 1352 8.76 431 405 108.1
A 9 19 1305 8.32 431 405 108.1
B 2 9 1582 12.34 462 442 92.4
B 3 80 1343 9.75 462 442 92.4
B 2 8 1276 9.02 462 442 92.4
C 1 81 1542 8.87 477 447 123.4
C 1 80 1527 8.75 477 447 123.4
C 3 203 1414 7.84 477 447 123.4
D 10 113 1147 6.42 434 395 117.1
D 4 160 1134 6.31 434 395 117.1
D 6 38 1116 6.16 434 395 117.1

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