ASTROSAT CZTI

Data Quality Report

Orbit 53818

Creation date: 2025-09-09T07:33:24.684750
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_022T04_9000006506_53818cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53818cztM0_level2_quad_clean.evt
Size (bytes)1,044,731,52069,177,600
Size996.3 MB 66.0 MB
Events in quadrant A14,677,807245,006
Events in quadrant B3,309,507707,284
Events in quadrant C6,224,570580,244
Events in quadrant D13,944,96497,058

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0481992
B0146852
C0230942
D0460082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6670455468.275862%
B6670941.409295%
C667073811.064468%
D6670569585.382309%

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 7835 6670 4475 4475 57.12% 67.09%
B 7835 6671 23 23 0.29% 0.34%
C 7835 6671 618 618 7.89% 9.26%
D 7834 6669 4146 4146 52.92% 62.17%

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 3 63 12314500 93770.4 531 520 131.3
A 0 8 205912 1564.05 531 520 131.3
A 12 115 22958 170.86 531 520 131.3
B 5 172 199636 1288.98 719 693 154.3
B 8 234 73338 470.68 719 693 154.3
B 0 213 43232 275.62 719 693 154.3
C 15 224 2840342 15323.51 675 668 185.3
C 1 241 134964 724.69 675 668 185.3
C 12 2 96774 518.61 675 668 185.3
D 8 176 8551011 115003.3 251 239 74.4
D 2 172 3886015 52261.6 251 239 74.4
D 2 153 176827 2375.01 251 239 74.4

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