ASTROSAT CZTI

Data Quality Report

Orbit 16039

Creation date: 2024-06-27T17:17:08.609077
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/AS1G08_012T01_9000002370_16039cztM0_level2.evt modeM0/AS1G08_012T01_9000002370_16039cztM0_level2_quad_clean.evt
Size (bytes)479,822,400105,480,000
Size457.6 MB 100.6 MB
Events in quadrant A3,661,522673,714
Events in quadrant B3,504,849699,111
Events in quadrant C3,558,341682,237
Events in quadrant D3,349,153669,979

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153123
B0146882
C0147492
D0143622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67312103.119893%
B67311201.782796%
C67311331.975932%
D6731831.233101%

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 9352 6733 116 116 1.24% 1.72%
B 9352 6732 2 2 0.02% 0.03%
C 9352 6732 2 2 0.02% 0.03%
D 9352 6733 3 3 0.03% 0.04%

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 15 223 244790 1396.98 875 857 174.6
A 15 239 49627 279.3 875 857 174.6
A 0 226 7702 39.2 875 857 174.6
B 12 111 19649 111.89 885 864 167.9
B 4 216 18490 104.98 885 864 167.9
B 11 111 16878 95.38 885 864 167.9
C 14 238 132689 659.45 865 872 199.9
C 3 233 38121 186.35 865 872 199.9
C 9 15 8322 37.27 865 872 199.9
D 2 152 34365 158.9 874 850 210.9
D 2 234 21183 96.4 874 850 210.9
D 13 238 11039 48.31 874 850 210.9

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