ASTROSAT CZTI

Data Quality Report

Orbit 17775

Creation date: 2024-06-27T17:40:44.307694
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/AS1A05_015T01_9000002650_17775cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17775cztM0_level2_quad_clean.evt
Size (bytes)524,540,160102,496,320
Size500.2 MB 97.7 MB
Events in quadrant A3,145,764681,720
Events in quadrant B3,280,022705,882
Events in quadrant C3,828,247661,009
Events in quadrant D5,189,337600,690

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135462
B0138422
C0154373
D0198332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6520300.460123%
B6521560.858764%
C65202213.389571%
D65205438.328221%

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 7865 6521 0 0 0.00% 0.00%
B 9241 6523 4 4 0.04% 0.06%
C 9240 6522 83 83 0.90% 1.27%
D 9240 6522 450 450 4.87% 6.90%

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 0 226 7164 39.13 817 804 162.5
A 12 194 6275 33.66 817 804 162.5
A 3 137 5783 30.64 817 804 162.5
B 4 80 29322 183.98 825 807 155.0
B 12 111 17786 109.55 825 807 155.0
B 11 111 15369 93.96 825 807 155.0
C 4 254 543433 2995.57 781 785 181.1
C 14 238 125205 686.83 781 785 181.1
C 3 233 65524 357.38 781 785 181.1
D 7 238 2242582 12607.9 748 731 177.8
D 12 110 41682 230.3 748 731 177.8
D 2 234 29855 163.79 748 731 177.8

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