ASTROSAT CZTI

Data Quality Report

Orbit 45690

Creation date: 2024-06-27T23:15:05.467595
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/AS1A13_071T05_9000006120_45690cztM0_level2.fits modeM0/AS1A13_071T05_9000006120_45690cztM0_level2_quad_clean.evt
Size (bytes)751,737,60099,869,760
Size716.9 MB 95.2 MB
Events in quadrant A6,130,583755,016
Events in quadrant B3,289,840801,151
Events in quadrant C12,985,330329,211
Events in quadrant D4,922,467689,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220382
B0138082
C0429972
D0187842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64403094.798137%
B64401061.645963%
C6440401662.360248%
D64402734.239130%

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 7615 6440 32 32 0.42% 0.50%
B 7615 6440 13 13 0.17% 0.20%
C 7615 6440 3860 3860 50.69% 59.94%
D 7615 6440 195 195 2.56% 3.03%

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 10 83 2923712 18105.49 781 765 161.4
A 13 248 165779 1022.14 781 765 161.4
A 15 174 12676 73.78 781 765 161.4
B 3 112 76078 493.46 780 758 152.6
B 5 171 42554 273.83 780 758 152.6
B 15 35 27302 173.9 780 758 152.6
C 9 54 10155623 71808.91 607 611 141.4
C 14 254 377051 2661.91 607 611 141.4
C 3 233 63394 443.96 607 611 141.4
D 11 241 733879 3815.01 765 745 192.2
D 1 52 453082 2353.83 765 745 192.2
D 2 120 392807 2040.17 765 745 192.2

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