ASTROSAT CZTI

Data Quality Report

Orbit 53456

Creation date: 2025-10-15T21:29:20.671284
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_002T06_9000006496_53456cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53456cztM0_level2_quad_clean.evt
Size (bytes)790,395,84084,015,360
Size753.8 MB 80.1 MB
Events in quadrant A5,127,826646,117
Events in quadrant B3,961,126735,252
Events in quadrant C15,404,840123,902
Events in quadrant D4,261,730587,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196442
B0161122
C0499943
D0170832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64745879.067037%
B64742333.599011%
C6473539383.315310%
D64732944.541943%

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 7634 6475 394 394 5.16% 6.08%
B 7634 6475 38 38 0.50% 0.59%
C 7632 6472 5150 5150 67.48% 79.57%
D 7633 6474 169 169 2.21% 2.61%

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 15 174 1570766 8702.25 735 717 180.4
A 3 63 578167 3200.61 735 717 180.4
A 4 249 33593 182.22 735 717 180.4
B 4 171 529893 3344.76 749 724 158.2
B 0 213 152472 959.17 749 724 158.2
B 8 234 141636 890.67 749 724 158.2
C 1 241 10647240 118357.32 327 323 90.0
C 15 178 3067316 34094.48 327 323 90.0
C 15 224 256959 2852.91 327 323 90.0
D 8 176 443412 2184.95 721 687 202.6
D 3 12 436980 2153.2 721 687 202.6
D 3 224 126747 622.13 721 687 202.6

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