ASTROSAT CZTI

Data Quality Report

Orbit 58397

Creation date: 2026-07-14T10:12:48.848515
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_045T01_9000006590_58397cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58397cztM0_level2_quad_clean.evt
Size (bytes)569,810,88096,531,840
Size543.4 MB 92.1 MB
Events in quadrant A3,666,028663,024
Events in quadrant B3,609,413709,160
Events in quadrant C7,623,093508,711
Events in quadrant D5,687,597586,983

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152282
B0148672
C0270892
D0213272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65291271.945168%
B65292253.446163%
C6529148322.714045%
D65291963.001991%

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 7714 6530 25 25 0.32% 0.38%
B 7714 6530 71 71 0.92% 1.09%
C 7714 6530 1255 1255 16.27% 19.22%
D 7714 6530 127 127 1.65% 1.94%

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 12 114 247164 1323.93 758 741 186.1
A 2 143 193643 1036.38 758 741 186.1
A 10 251 63406 336.67 758 741 186.1
B 10 247 178518 1101.75 748 719 161.4
B 4 201 102241 629.09 748 719 161.4
B 0 156 67637 414.67 748 719 161.4
C 9 38 2874454 15870.13 657 650 181.1
C 5 10 1932114 10666.21 657 650 181.1
C 4 5 84615 463.68 657 650 181.1
D 5 113 1952839 9463.2 723 689 206.3
D 8 240 360249 1743.0 723 689 206.3
D 12 248 153341 739.99 723 689 206.3

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