ASTROSAT CZTI

Data Quality Report

Orbit 31195

Creation date: 2024-06-27T20:24:50.288937
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/AS1A10_082T10_9000004512_31195cztM0_level2.evt modeM0/AS1A10_082T10_9000004512_31195cztM0_level2_quad_clean.evt
Size (bytes)640,192,32091,840,320
Size610.5 MB 87.6 MB
Events in quadrant A3,379,816606,953
Events in quadrant B6,385,297584,329
Events in quadrant C3,664,395577,234
Events in quadrant D5,526,311565,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140182
B0230502
C0148142
D0211312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64001332.078125%
B640075511.796875%
C64002614.078125%
D63992313.609939%

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 7620 6401 0 0 0.00% 0.00%
B 7620 6401 370 370 4.86% 5.78%
C 7620 6401 29 29 0.38% 0.45%
D 7619 6400 71 71 0.93% 1.11%

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 12982 69.7 875 862 173.9
A 3 137 8138 41.84 875 862 173.9
A 0 226 7429 37.76 875 862 173.9
B 6 159 1827274 11994.33 820 801 152.3
B 4 80 1098178 7206.41 820 801 152.3
B 0 190 87165 567.15 820 801 152.3
C 0 10 209667 1097.85 831 835 190.2
C 14 238 138662 724.57 831 835 190.2
C 4 175 52126 269.64 831 835 190.2
D 8 195 1889258 9081.1 843 825 208.0
D 12 218 149565 715.26 843 825 208.0
D 2 250 149107 713.06 843 825 208.0

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