ASTROSAT CZTI

Data Quality Report

Orbit 24796

Creation date: 2024-06-27T19:09:58.371787
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/AS1T03_197T01_9000003626_24796cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24796cztM0_level2_quad_clean.evt
Size (bytes)2,578,970,880396,259,200
Size2.4 GB 377.9 MB
Events in quadrant A15,461,4832,569,892
Events in quadrant B29,391,3512,369,783
Events in quadrant C15,717,7862,479,272
Events in quadrant D15,438,1192,446,252

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06340
B06340
C06340
D06340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0646055
B01070685
C0655045
D06596012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A310722100.675850%
B31072566518.231849%
C310733531.136034%
D310711990.640469%

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 38187 31078 7 7 0.02% 0.02%
B 38187 31078 4488 4488 11.75% 14.44%
C 38188 31079 2 2 0.01% 0.01%
D 38187 31078 68 68 0.18% 0.22%

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 13 254 46582 54.16 3996 3927 787.6
A 15 223 44856 51.97 3996 3927 787.6
A 3 137 35903 40.6 3996 3927 787.6
B 3 64 14830247 22453.29 3531 3455 660.3
B 0 189 599311 902.35 3531 3455 660.3
B 12 111 80319 116.4 3531 3455 660.3
C 14 238 608899 702.2 3768 3797 861.7
C 10 91 259497 296.73 3768 3797 861.7
C 8 208 90006 100.04 3768 3797 861.7
D 1 52 416618 453.5 3841 3728 910.5
D 8 195 231515 250.19 3841 3728 910.5
D 2 244 189218 203.73 3841 3728 910.5

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