ASTROSAT CZTI

Data Quality Report

Orbit 55200

Creation date: 2025-12-11T09:19:09.209926
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_022T16_9000006532_55200cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55200cztM0_level2_quad_clean.evt
Size (bytes)438,099,84098,850,240
Size417.8 MB 94.3 MB
Events in quadrant A3,799,656649,125
Events in quadrant B3,018,430709,703
Events in quadrant C3,374,917621,626
Events in quadrant D5,497,100540,713

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162982
B0142042
C0152972
D0212663

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67741251.845291%
B6774480.708592%
C6774921.358134%
D67736779.995571%

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 7904 6776 101 101 1.28% 1.49%
B 7904 6776 8 8 0.10% 0.12%
C 7904 6776 72 72 0.91% 1.06%
D 7903 6775 512 512 6.48% 7.56%

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 12 115 816651 4607.06 709 693 177.1
A 3 14 96131 538.86 709 693 177.1
A 3 45 51011 284.11 709 693 177.1
B 10 247 119101 774.91 712 687 152.8
B 4 81 34584 221.82 712 687 152.8
B 12 111 18456 116.28 712 687 152.8
C 13 3 260446 1353.23 694 687 192.0
C 14 254 140177 726.68 694 687 192.0
C 1 16 76403 394.45 694 687 192.0
D 2 249 1155387 6179.44 655 628 186.9
D 7 96 992668 5308.68 655 628 186.9
D 11 129 581066 3106.09 655 628 186.9

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