ASTROSAT CZTI

Data Quality Report

Orbit 20190526_A05_117T01_9000002958_level2

Creation date: 2025-12-01T00:28:59.130148
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/AS1A05_117T01_9000002958cztM0_level2.fits modeM0/AS1A05_117T01_9000002958cztM0_level2_quad_clean.evt
Size (bytes)1,117,618,5601,071,970,560
Size1.0 GB 1022.3 MB
Events in quadrant A6,659,2366,092,214
Events in quadrant B6,753,7826,675,084
Events in quadrant C6,702,6146,095,138
Events in quadrant D5,890,2605,768,882

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02090
B02090
C02090
D02090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03514740
B02460910
C02908360
D02941860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023240
B023240
C023240
D023240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114312101178.850339%
B11431820141.761752%
C11431468906.027258%
D11431552674.607444%

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 134593 114254 0 0 0.00% 0.00%
B 134593 114323 0 0 0.00% 0.00%
C 134593 114186 0 0 0.00% 0.00%
D 134593 114323 0 0 0.00% 0.00%

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 29 6257 11.06 1734 1630 418.5
A 7 110 5442 9.11 1734 1630 418.5
A 9 19 5034 8.13 1734 1630 418.5
B 2 9 5471 10.92 1782 1701 345.2
B 2 8 4676 8.62 1782 1701 345.2
B 3 17 4435 7.92 1782 1701 345.2
C 1 80 5135 7.79 1766 1655 446.9
C 1 81 5114 7.74 1766 1655 446.9
C 2 191 4561 6.5 1766 1655 446.9
D 6 67 4210 6.11 1681 1535 437.5
D 15 46 4199 6.09 1681 1535 437.5
D 10 189 4171 6.03 1681 1535 437.5

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