ASTROSAT CZTI

Data Quality Report

Orbit 58414

Creation date: 2026-07-15T14:14:19.717749
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_58414cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58414cztM0_level2_quad_clean.evt
Size (bytes)456,624,00090,483,840
Size435.5 MB 86.3 MB
Events in quadrant A3,708,720589,725
Events in quadrant B4,212,724616,576
Events in quadrant C4,846,432540,800
Events in quadrant D3,623,729535,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014814
B01479
C014814
D014816

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173071869
B0191392114
C0213452503
D0171041836

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073
B073
C073
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65782834.302220%
B65655959.063214%
C65045638.656212%
D65792283.465572%

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 7781 6905 9 9 0.12% 0.13%
B 8674 6898 261 261 3.01% 3.78%
C 8690 6859 285 285 3.28% 4.16%
D 7781 6909 33 33 0.42% 0.48%

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 397628 2127.09 751 730 186.6
A 3 14 278257 1487.35 751 730 186.6
A 10 251 45247 238.58 751 730 186.6
B 5 172 415297 2677.5 713 687 154.8
B 0 153 251560 1620.11 713 687 154.8
B 4 201 197654 1271.99 713 687 154.8
C 5 10 948528 4921.85 706 700 192.6
C 9 38 717464 3721.99 706 700 192.6
C 9 237 118146 609.87 706 700 192.6
D 12 110 204046 981.71 732 697 207.1
D 8 240 161704 777.29 732 697 207.1
D 11 129 124917 599.7 732 697 207.1

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