ASTROSAT CZTI

Data Quality Report

Orbit 58467

Creation date: 2026-07-19T03:11:38.059401
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_044T04_9000006592_58467cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58467cztM0_level2_quad_clean.evt
Size (bytes)677,263,68081,532,800
Size645.9 MB 77.8 MB
Events in quadrant A3,466,450628,609
Events in quadrant B11,662,702283,683
Events in quadrant C5,361,736552,997
Events in quadrant D4,084,569558,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147892
B0389892
C0204942
D0165522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63701181.852433%
B6369385460.511854%
C636976411.995604%
D63692173.407128%

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 7469 6369 51 51 0.68% 0.80%
B 7468 6368 3566 3566 47.75% 56.00%
C 7468 6369 686 686 9.19% 10.77%
D 7468 6369 203 203 2.72% 3.19%

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 10 17 469817 2644.23 704 686 177.4
A 12 114 120199 673.63 704 686 177.4
A 12 80 47206 262.21 704 686 177.4
B 2 249 9213743 101726.58 420 406 90.6
B 5 172 340304 3752.89 420 406 90.6
B 8 128 212554 2342.37 420 406 90.6
C 5 10 2153315 12003.89 652 647 179.3
C 9 38 165675 920.24 652 647 179.3
C 6 223 121678 674.9 652 647 179.3
D 2 153 459211 2380.69 677 647 192.6
D 8 240 373790 1937.22 677 647 192.6
D 2 249 106855 551.39 677 647 192.6

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