ASTROSAT CZTI

Data Quality Report

Orbit 19685

Creation date: 2024-06-27T18:05:33.735393
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_221T01_9000002936_19685cztM0_level2.evt modeM0/AS1A05_221T01_9000002936_19685cztM0_level2_quad_clean.evt
Size (bytes)516,029,760103,124,160
Size492.1 MB 98.3 MB
Events in quadrant A3,450,609693,990
Events in quadrant B3,507,721711,125
Events in quadrant C3,611,412677,977
Events in quadrant D4,617,728587,051

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140252
B0142282
C0145872
D0177712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6492490.754775%
B6492620.955022%
C6492711.093654%
D64926269.642637%

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 7857 6493 4 4 0.05% 0.06%
B 7857 6493 5 5 0.06% 0.08%
C 7857 6493 0 0 0.00% 0.00%
D 7857 6493 498 498 6.34% 7.67%

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 5 16 58694 331.21 880 864 174.6
A 0 226 7626 38.73 880 864 174.6
A 12 194 6363 31.49 880 864 174.6
B 4 216 24401 144.83 876 859 162.6
B 12 111 18788 110.3 876 859 162.6
B 11 111 16375 95.45 876 859 162.6
C 14 238 134843 673.88 852 860 198.8
C 3 233 102321 510.31 852 860 198.8
C 9 221 31859 155.91 852 860 198.8
D 1 20 1284758 6698.23 799 781 191.7
D 1 52 161165 836.69 799 781 191.7
D 7 38 56680 291.61 799 781 191.7

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