ASTROSAT CZTI

Data Quality Report

Orbit 08016

Creation date: 2024-06-27T15:26:50.806365
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/AS1G06_154T01_9000001100_08016cztM0_level2.evt modeM0/AS1G06_154T01_9000001100_08016cztM0_level2_quad_clean.evt
Size (bytes)1,654,686,720314,550,720
Size1.5 GB 300.0 MB
Events in quadrant A11,880,1041,924,492
Events in quadrant B11,988,2651,966,849
Events in quadrant C11,745,4021,949,506
Events in quadrant D12,733,4151,891,393

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05300
B05300
C05300
D05300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0535604
B0532094
C0531014
D0564774

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A260933731.429502%
B260933301.264707%
C260932661.019430%
D260934161.594297%

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 28593 26096 9 9 0.03% 0.03%
B 28593 26096 2 2 0.01% 0.01%
C 28593 26096 0 0 0.00% 0.00%
D 28593 26097 109 109 0.38% 0.42%

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 15 234 180525 287.51 3037 2960 617.6
A 0 226 28323 41.07 3037 2960 617.6
A 12 194 25795 36.97 3037 2960 617.6
B 12 111 68475 110.97 3057 2977 590.2
B 11 111 55190 88.46 3057 2977 590.2
B 11 51 43163 68.09 3057 2977 590.2
C 1 16 45750 61.48 2983 2992 695.4
C 8 128 34566 45.4 2983 2992 695.4
C 13 61 22293 27.75 2983 2992 695.4
D 11 144 673546 941.99 2964 2885 712.0
D 1 52 429679 599.46 2964 2885 712.0
D 2 14 259327 360.19 2964 2885 712.0

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