ASTROSAT CZTI

Data Quality Report

Orbit 56292

Creation date: 2026-02-22T20:38:03.559619
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_56292cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56292cztM0_level2_quad_clean.evt
Size (bytes)799,914,24082,183,680
Size762.9 MB 78.4 MB
Events in quadrant A16,679,41972,544
Events in quadrant B4,440,494692,889
Events in quadrant C3,580,952640,606
Events in quadrant D4,367,759596,619

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0543421
B0181711
C0158531
D0178721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6967633390.899957%
B69674055.813119%
C6968841.205511%
D69681922.755454%

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 7376 6966 6079 6079 82.42% 87.27%
B 7377 6967 215 215 2.91% 3.09%
C 7378 6968 54 54 0.73% 0.77%
D 7378 6968 160 160 2.17% 2.30%

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 15 32 10516107 117208.51 351 342 89.7
A 4 95 2319219 25846.16 351 342 89.7
A 8 25 677735 7550.21 351 342 89.7
B 5 185 725440 4591.43 735 707 157.8
B 5 172 201638 1272.97 735 707 157.8
B 10 247 160902 1014.89 735 707 157.8
C 12 252 359624 1772.23 728 720 202.5
C 5 250 151428 744.18 728 720 202.5
C 12 249 71172 347.89 728 720 202.5
D 5 32 501922 2428.54 729 697 206.4
D 2 249 380827 1841.81 729 697 206.4
D 8 129 229111 1106.71 729 697 206.4

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