ASTROSAT CZTI

Data Quality Report

Orbit 45922

Creation date: 2024-06-27T23:17:44.556761
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/AS1A13_071T03_9000006142_45922cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45922cztM0_level2_quad_clean.evt
Size (bytes)599,935,680104,109,120
Size572.1 MB 99.3 MB
Events in quadrant A5,864,194718,107
Events in quadrant B6,363,581690,052
Events in quadrant C3,216,243722,802
Events in quadrant D6,265,149572,228

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218822
B0232772
C0140232
D0230442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64392313.587514%
B643982512.812549%
C6439901.397733%
D643995514.831496%

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 7604 6440 81 81 1.07% 1.26%
B 7604 6439 493 493 6.48% 7.66%
C 7604 6440 68 68 0.89% 1.06%
D 7604 6440 823 823 10.82% 12.78%

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 10 83 2973452 19796.48 724 709 150.2
A 13 248 25320 163.89 724 709 150.2
A 0 247 20034 128.69 724 709 150.2
B 3 112 3193706 23218.28 707 687 137.5
B 10 246 209791 1520.52 707 687 137.5
B 4 158 67396 485.08 707 687 137.5
C 14 254 273256 1592.57 722 727 171.1
C 12 249 70657 408.65 722 727 171.1
C 9 54 40101 230.09 722 727 171.1
D 2 37 1874666 10891.7 676 658 172.1
D 1 52 594766 3452.95 676 658 172.1
D 11 241 578773 3359.99 676 658 172.1

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