ASTROSAT CZTI

Data Quality Report

Orbit 58568

Creation date: 2026-07-25T22:08:47.965597
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_58568cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58568cztM0_level2_quad_clean.evt
Size (bytes)465,805,44089,305,920
Size444.2 MB 85.2 MB
Events in quadrant A4,467,763570,672
Events in quadrant B3,346,884640,996
Events in quadrant C5,483,371529,596
Events in quadrant D3,465,738532,887

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173751
B0141281
C0205331
D0146171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61624327.010711%
B6162861.395651%
C61626089.866926%
D61621231.996105%

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 7172 6163 282 282 3.93% 4.58%
B 7172 6163 26 26 0.36% 0.42%
C 7172 6163 568 568 7.92% 9.22%
D 7172 6163 67 67 0.93% 1.09%

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 15 233 1524596 9163.06 662 646 166.3
A 3 14 119485 714.54 662 646 166.3
A 10 17 116390 695.93 662 646 166.3
B 0 171 243208 1684.34 670 644 144.0
B 4 171 121334 838.06 670 644 144.0
B 8 234 97606 673.29 670 644 144.0
C 15 1 1896759 10780.19 637 631 175.9
C 14 245 402894 2287.01 637 631 175.9
C 12 252 205549 1165.03 637 631 175.9
D 2 249 183435 969.79 657 626 188.5
D 2 120 139087 734.53 657 626 188.5
D 2 207 108909 574.44 657 626 188.5

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