ASTROSAT CZTI

Data Quality Report

Orbit 58482

Creation date: 2026-07-20T03:15:33.472807
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_58482cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58482cztM0_level2_quad_clean.evt
Size (bytes)615,026,88081,944,640
Size586.5 MB 78.1 MB
Events in quadrant A3,832,269621,574
Events in quadrant B11,386,240269,434
Events in quadrant C3,383,978601,205
Events in quadrant D3,678,353553,477

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155412
B0381187
C0144582
D0153142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62451262.017614%
B6244386761.931454%
C62441031.649584%
D62441822.914798%

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 7425 6246 79 79 1.06% 1.26%
B 7424 6245 2937 2937 39.56% 47.03%
C 7424 6245 90 90 1.21% 1.44%
D 7424 6245 171 171 2.30% 2.74%

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 80 259745 1504.79 688 671 172.2
A 12 114 225316 1304.82 688 671 172.2
A 7 64 181127 1048.15 688 671 172.2
B 2 249 8946696 110234.66 377 364 81.2
B 5 172 822952 10135.74 377 364 81.2
B 0 153 40736 497.45 377 364 81.2
C 5 10 331640 1778.18 673 665 186.1
C 12 249 86956 463.6 673 665 186.1
C 12 252 81077 432.02 673 665 186.1
D 8 240 589025 3159.15 661 630 186.3
D 3 12 251344 1346.11 661 630 186.3
D 0 97 91199 486.27 661 630 186.3

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