ASTROSAT CZTI

Data Quality Report

Orbit 56095

Creation date: 2026-02-09T15:39:43.052364
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_083T03_9000006548_56095cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56095cztM0_level2_quad_clean.evt
Size (bytes)652,343,04097,490,880
Size622.1 MB 93.0 MB
Events in quadrant A8,783,582534,518
Events in quadrant B3,486,471736,107
Events in quadrant C4,555,987623,764
Events in quadrant D6,743,480539,891

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312272
B0157072
C0190852
D0253682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7443184724.815263%
B74431682.257154%
C74435447.308881%
D7443112615.128308%

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 8943 7445 1502 1502 16.80% 20.17%
B 8943 7445 6 6 0.07% 0.08%
C 8943 7445 309 309 3.46% 4.15%
D 8943 7445 984 984 11.00% 13.22%

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 12 115 4821672 26671.36 725 704 180.8
A 3 14 551507 3047.24 725 704 180.8
A 15 32 347332 1917.67 725 704 180.8
B 4 21 140082 817.37 796 763 170.4
B 5 172 50238 290.27 796 763 170.4
B 10 247 49447 285.62 796 763 170.4
C 12 254 1075581 5168.21 763 755 208.0
C 12 252 213078 1020.94 763 755 208.0
C 9 38 194763 932.87 763 755 208.0
D 8 129 2954671 14216.8 737 702 207.8
D 8 240 257372 1235.29 737 702 207.8
D 2 31 211157 1012.87 737 702 207.8

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