ASTROSAT CZTI

Data Quality Report

Orbit 46388

Creation date: 2024-06-27T23:22:32.957794
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_070T06_9000006202_46388cztM0_level2.fits modeM0/AS1A13_070T06_9000006202_46388cztM0_level2_quad_clean.evt
Size (bytes)518,604,480116,974,080
Size494.6 MB 111.6 MB
Events in quadrant A7,702,527719,646
Events in quadrant B3,432,056829,809
Events in quadrant C3,328,885800,112
Events in quadrant D4,205,221718,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270412
B0145962
C0144972
D0171112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A680792913.647716%
B68071942.850007%
C6807981.439694%
D68072173.187895%

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 7942 6808 662 662 8.34% 9.72%
B 7942 6808 21 21 0.26% 0.31%
C 7942 6808 15 15 0.19% 0.22%
D 7942 6808 93 93 1.17% 1.37%

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 3104541 19257.4 783 766 161.2
A 0 247 1448894 8984.92 783 766 161.2
A 0 226 87050 535.35 783 766 161.2
B 5 32 179224 1128.57 810 786 158.1
B 0 189 25108 153.83 810 786 158.1
B 12 111 20145 122.44 810 786 158.1
C 14 254 98268 526.38 799 805 185.2
C 12 249 60540 322.62 799 805 185.2
C 1 3 33174 174.82 799 805 185.2
D 1 52 768317 3934.21 795 770 195.1
D 13 249 283929 1451.39 795 770 195.1
D 13 138 44913 226.26 795 770 195.1

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