ASTROSAT CZTI

Data Quality Report

Orbit 56222

Creation date: 2026-02-18T03:29:04.607693
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_083T04_9000006550_56222cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56222cztM0_level2_quad_clean.evt
Size (bytes)780,834,24084,919,680
Size744.7 MB 81.0 MB
Events in quadrant A14,001,531343,721
Events in quadrant B4,165,631647,405
Events in quadrant C3,957,954563,036
Events in quadrant D6,190,385487,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468840
B0180480
C0175400
D0238260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7597366048.176912%
B75982793.672019%
C7598831.092393%
D75977139.385284%

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 7877 7686 3715 3715 47.16% 48.33%
B 7878 7878 169 169 2.15% 2.15%
C 7878 7878 105 105 1.33% 1.33%
D 7877 7871 752 752 9.55% 9.55%

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 6504308 41527.54 620 604 156.6
A 8 176 4301823 27464.2 620 604 156.6
A 0 8 256328 1632.85 620 604 156.6
B 1 159 495697 2960.44 777 747 167.2
B 10 247 194572 1159.32 777 747 167.2
B 5 185 150043 892.98 777 747 167.2
C 12 254 582401 2798.06 758 751 207.9
C 12 252 228916 1097.6 758 751 207.9
C 13 3 70472 335.4 758 751 207.9
D 6 239 1417924 6813.19 728 696 208.0
D 2 249 560795 2692.62 728 696 208.0
D 11 129 267459 1282.44 728 696 208.0

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