ASTROSAT CZTI

Data Quality Report

Orbit 12738

Creation date: 2024-06-27T16:31:46.228534
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/AS1G08_021T01_9000001880_12738cztM0_level2.evt modeM0/AS1G08_021T01_9000001880_12738cztM0_level2_quad_clean.evt
Size (bytes)892,304,640192,093,120
Size851.0 MB 183.2 MB
Events in quadrant A5,941,5131,330,557
Events in quadrant B9,007,7891,223,948
Events in quadrant C4,757,3561,305,543
Events in quadrant D6,617,3761,241,652

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245113
B0335412
C0212902
D0268962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103413263.152500%
B10341180817.483802%
C103411131.092738%
D103415385.202592%

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 12877 10344 86 86 0.67% 0.83%
B 12877 10344 1295 1295 10.06% 12.52%
C 12877 10344 1 1 0.01% 0.01%
D 12877 10344 399 399 3.10% 3.86%

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 8 15 874192 3481.31 1261 1236 250.8
A 15 222 165804 656.29 1261 1236 250.8
A 12 189 47824 185.79 1261 1236 250.8
B 4 239 4310290 20356.41 1150 1124 211.7
B 0 190 36035 164.92 1150 1124 211.7
B 3 209 30852 140.43 1150 1124 211.7
C 13 61 9104 28.55 1215 1220 276.1
C 8 128 8396 25.99 1215 1220 276.1
C 8 112 4854 13.16 1215 1220 276.1
D 1 52 1464904 5325.04 1172 1142 274.9
D 10 199 651572 2366.21 1172 1142 274.9
D 2 234 40674 143.81 1172 1142 274.9

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