ASTROSAT CZTI

Data Quality Report

Orbit 24844

Creation date: 2024-06-27T19:10:33.276493
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/AS1A08_003T04_9000003634_24844cztM0_level2.evt modeM0/AS1A08_003T04_9000003634_24844cztM0_level2_quad_clean.evt
Size (bytes)547,721,28095,388,480
Size522.3 MB 91.0 MB
Events in quadrant A3,357,013632,967
Events in quadrant B3,391,663639,946
Events in quadrant C3,333,067603,822
Events in quadrant D6,037,250530,601

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143281
B0144311
C0142261
D0225513

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69051031.491673%
B69061241.795540%
C69061301.882421%
D6905105115.220854%

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 7200 6906 5 5 0.07% 0.07%
B 7201 6907 0 0 0.00% 0.00%
C 7201 6907 0 0 0.00% 0.00%
D 7200 6906 992 992 13.78% 14.36%

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 6 16 50893 285.95 856 837 175.1
A 13 254 10010 52.4 856 837 175.1
A 3 137 8183 41.96 856 837 175.1
B 0 189 32584 191.94 845 823 165.5
B 12 111 20436 118.53 845 823 165.5
B 11 111 18735 108.25 845 823 165.5
C 14 238 128558 662.39 816 818 192.8
C 8 128 11443 55.1 816 818 192.8
C 8 112 5965 26.69 816 818 192.8
D 1 52 2755782 14352.52 778 754 192.0
D 8 195 194226 1007.91 778 754 192.0
D 5 222 54621 280.62 778 754 192.0

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