ASTROSAT CZTI

Data Quality Report

Orbit 58524

Creation date: 2026-07-23T09:55:50.392979
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_58524cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58524cztM0_level2_quad_clean.evt
Size (bytes)483,390,72096,526,080
Size461.0 MB 92.1 MB
Events in quadrant A3,951,002644,050
Events in quadrant B3,467,354688,845
Events in quadrant C5,324,304569,248
Events in quadrant D4,637,618559,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161892
B0149072
C0205242
D0182622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6607731.104889%
B66071211.831391%
C660667610.233121%
D66063785.722071%

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 7572 6607 25 25 0.33% 0.38%
B 7572 6607 31 31 0.41% 0.47%
C 7571 6606 575 575 7.59% 8.70%
D 7571 6606 309 309 4.08% 4.68%

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 4 249 782775 4253.32 738 719 183.9
A 10 17 102532 553.72 738 719 183.9
A 10 251 45796 245.16 738 719 183.9
B 4 171 107362 685.81 728 702 155.5
B 2 249 75177 478.87 728 702 155.5
B 5 185 68296 434.62 728 702 155.5
C 5 10 941036 5006.03 688 684 187.8
C 4 5 780745 4152.71 688 684 187.8
C 6 223 304612 1617.98 688 684 187.8
D 3 12 1245039 6257.61 702 670 198.9
D 2 153 187626 940.15 702 670 198.9
D 8 240 183005 916.92 702 670 198.9

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