ASTROSAT CZTI

Data Quality Report

Orbit 55213

Creation date: 2025-12-12T05:27:18.317934
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_55213cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55213cztM0_level2_quad_clean.evt
Size (bytes)422,876,160102,283,200
Size403.3 MB 97.5 MB
Events in quadrant A3,598,390671,806
Events in quadrant B3,046,857725,830
Events in quadrant C4,442,420625,021
Events in quadrant D4,041,029603,715

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156532
B0141342
C0181392
D0168872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67451772.624166%
B6745660.978503%
C67462994.432256%
D67461211.793655%

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 9030 6747 121 121 1.34% 1.79%
B 9030 6747 13 13 0.14% 0.19%
C 9031 6748 266 266 2.95% 3.94%
D 9031 6748 91 91 1.01% 1.35%

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 0 8 554290 3032.59 735 716 182.5
A 4 205 58493 316.51 735 716 182.5
A 4 3 33968 182.16 735 716 182.5
B 10 247 36242 227.89 733 709 155.9
B 2 249 34253 215.13 733 709 155.9
B 5 172 24920 155.28 733 709 155.9
C 12 252 399081 2040.36 711 704 195.2
C 13 3 308780 1577.86 711 704 195.2
C 12 254 277243 1416.34 711 704 195.2
D 11 129 579677 2862.09 713 684 202.3
D 2 249 409149 2019.13 713 684 202.3
D 2 31 71253 348.84 713 684 202.3

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