ASTROSAT CZTI

Data Quality Report

Orbit 13813

Creation date: 2024-06-27T16:46:25.878569
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/AS1A04_199T01_9000002040_13813cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13813cztM0_level2_quad_clean.evt
Size (bytes)592,292,16086,497,920
Size564.9 MB 82.5 MB
Events in quadrant A3,987,553517,836
Events in quadrant B4,161,994525,053
Events in quadrant C4,068,927514,475
Events in quadrant D5,158,909488,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173315
B0176164
C0173874
D0206734

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82444785.798156%
B82445116.198447%
C82443674.451722%
D82444565.531295%

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 8595 8247 0 0 0.00% 0.00%
B 8595 8246 6 6 0.07% 0.07%
C 8595 8249 0 0 0.00% 0.00%
D 8595 8246 44 44 0.51% 0.53%

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 1 162 19738 88.2 1027 1002 212.4
A 8 15 10524 44.82 1027 1002 212.4
A 0 226 9107 38.15 1027 1002 212.4
B 4 80 58592 288.95 1023 994 199.3
B 10 244 45766 224.6 1023 994 199.3
B 0 214 26838 129.65 1023 994 199.3
C 3 233 133453 564.54 1006 1008 234.6
C 13 61 7160 26.22 1006 1008 234.6
C 8 128 5444 18.91 1006 1008 234.6
D 1 52 912569 3761.08 997 965 242.4
D 10 157 313725 1290.38 997 965 242.4
D 5 222 71894 292.64 997 965 242.4

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