ASTROSAT CZTI

Data Quality Report

Orbit 31435

Creation date: 2024-06-27T20:28:28.116191
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/AS1C06_005T01_9000004580_31435cztM0_level2.evt modeM0/AS1C06_005T01_9000004580_31435cztM0_level2_quad_clean.evt
Size (bytes)658,293,120122,621,760
Size627.8 MB 116.9 MB
Events in quadrant A3,054,924877,968
Events in quadrant B8,393,241706,050
Events in quadrant C3,356,273846,168
Events in quadrant D4,686,436823,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133742
B0295742
C0140172
D0184712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A658150.075976%
B6581180827.473028%
C65812623.981158%
D65812013.054247%

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 7596 6582 0 0 0.00% 0.00%
B 7595 6580 1516 1516 19.96% 23.04%
C 7596 6582 0 0 0.00% 0.00%
D 7596 6582 167 167 2.20% 2.54%

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 12791 75.9 790 776 158.3
A 3 137 7997 45.61 790 776 158.3
A 0 226 6596 36.76 790 776 158.3
B 12 1 4101364 32868.65 651 633 124.8
B 6 159 1546320 12389.17 651 633 124.8
B 4 80 130718 1042.67 651 633 124.8
C 14 238 195994 1095.69 757 759 178.2
C 14 254 108601 605.23 757 759 178.2
C 3 233 82911 461.05 757 759 178.2
D 1 52 575466 3010.52 753 735 190.9
D 8 195 553932 2897.73 753 735 190.9
D 13 249 261304 1364.9 753 735 190.9

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