ASTROSAT CZTI

Data Quality Report

Orbit 56191

Creation date: 2026-02-16T01:22:31.729137
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_56191cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56191cztM0_level2_quad_clean.evt
Size (bytes)769,302,72099,679,680
Size733.7 MB 95.1 MB
Events in quadrant A10,124,259545,435
Events in quadrant B4,290,291753,450
Events in quadrant C8,314,166575,161
Events in quadrant D5,164,667619,221

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353580
B0182551
C0299820
D0207190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7542204127.061787%
B75411952.585864%
C7541144419.148654%
D75413064.057817%

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 7541 7541 1807 1807 23.96% 23.96%
B 7541 7541 97 97 1.29% 1.29%
C 7541 7541 1231 1231 16.32% 16.32%
D 7540 7540 292 292 3.87% 3.87%

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 3731926 21472.54 694 676 173.8
A 8 176 1792224 10309.97 694 676 173.8
A 7 64 928358 5338.61 694 676 173.8
B 5 185 291462 1733.78 792 765 167.7
B 10 247 199058 1182.66 792 765 167.7
B 0 213 142005 842.38 792 765 167.7
C 12 254 4463411 22835.08 710 702 195.4
C 9 38 808943 4135.66 710 702 195.4
C 12 252 119089 605.77 710 702 195.4
D 6 239 875507 4069.71 758 725 214.9
D 2 249 564120 2621.06 758 725 214.9
D 13 153 249396 1156.88 758 725 214.9

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