ASTROSAT CZTI

Data Quality Report

Orbit 57538

Creation date: 2026-05-17T15:11:18.473737
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_113T09_9000006574_57538cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57538cztM0_level2_quad_clean.evt
Size (bytes)382,875,84088,228,800
Size365.1 MB 84.1 MB
Events in quadrant A3,065,406577,895
Events in quadrant B2,868,553629,092
Events in quadrant C3,874,425551,210
Events in quadrant D3,908,378503,962

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133151
B0125671
C0156111
D0155111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58561492.544399%
B5857731.246372%
C58572514.285470%
D58573515.992829%

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 6991 5857 60 60 0.86% 1.02%
B 6992 5858 17 17 0.24% 0.29%
C 6992 5858 167 167 2.39% 2.85%
D 6992 5858 304 304 4.35% 5.19%

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 10 251 385058 2436.51 646 629 157.8
A 3 14 111885 705.14 646 629 157.8
A 4 249 31491 195.6 646 629 157.8
B 10 247 106888 785.95 638 615 135.2
B 7 252 77585 569.24 638 615 135.2
B 4 206 49809 363.82 638 615 135.2
C 15 224 1011455 5974.33 622 617 169.2
C 14 96 167650 987.21 622 617 169.2
C 14 245 86999 510.54 622 617 169.2
D 15 94 728905 4150.63 613 584 175.5
D 15 142 423681 2411.19 613 584 175.5
D 2 31 113336 642.56 613 584 175.5

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