ASTROSAT CZTI

Data Quality Report

Orbit 56348

Creation date: 2026-02-26T14:17:58.788481
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/AS1A14_049T01_9000006552_56348cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56348cztM0_level2_quad_clean.evt
Size (bytes)511,444,80051,186,240
Size487.8 MB 48.8 MB
Events in quadrant A3,309,241378,001
Events in quadrant B4,109,021372,954
Events in quadrant C4,196,067303,216
Events in quadrant D7,001,707208,785

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125961
B0149421
C0152641
D0235741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40632626.448437%
B406369917.204036%
C406392122.667979%
D4063190246.812700%

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 4063 4063 232 232 5.71% 5.71%
B 4062 4062 567 567 13.96% 13.96%
C 4063 4063 757 757 18.63% 18.63%
D 4062 4062 1551 1551 38.18% 38.18%

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 7 64 452868 4209.2 428 418 107.5
A 4 95 419037 3894.47 428 418 107.5
A 8 25 201501 1870.7 428 418 107.5
B 5 172 1476641 17071.39 405 391 86.5
B 5 185 408297 4717.03 405 391 86.5
B 8 128 179220 2067.98 405 391 86.5
C 15 230 2063349 20320.38 368 364 101.5
C 6 223 174375 1714.01 368 364 101.5
C 15 209 128620 1263.32 368 364 101.5
D 2 62 2665560 28198.48 328 312 94.5
D 12 3 2181460 23076.68 328 312 94.5
D 8 240 307563 3250.73 328 312 94.5

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