ASTROSAT CZTI

Data Quality Report

Orbit 31339

Creation date: 2024-06-27T20:26:56.208889
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/AS1T04_025T01_9000004538_31339cztM0_level2.evt modeM0/AS1T04_025T01_9000004538_31339cztM0_level2_quad_clean.evt
Size (bytes)438,661,440111,553,920
Size418.3 MB 106.4 MB
Events in quadrant A2,558,334784,277
Events in quadrant B3,997,744765,380
Events in quadrant C2,979,218740,390
Events in quadrant D3,418,083745,809

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105701
B0153061
C0121261
D0134231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4893591.205804%
B48941182.411116%
C48942675.455660%
D4894611.246424%

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 6208 4894 0 0 0.00% 0.00%
B 6209 4895 3 3 0.05% 0.06%
C 6209 4895 13 13 0.21% 0.27%
D 6209 4895 2 2 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 13 254 8989 63.14 663 651 132.1
A 3 137 5930 39.98 663 651 132.1
A 0 226 5793 38.94 663 651 132.1
B 6 159 1330537 11170.56 639 624 119.1
B 4 80 64167 533.73 639 624 119.1
B 0 190 55560 461.43 639 624 119.1
C 3 233 217428 1526.88 619 625 142.0
C 14 238 137680 965.24 619 625 142.0
C 0 10 84224 588.76 619 625 142.0
D 8 195 944883 6310.74 644 628 149.6
D 12 233 21582 140.04 644 628 149.6
D 2 234 21532 139.71 644 628 149.6

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