ASTROSAT CZTI

Data Quality Report

Orbit 44805

Creation date: 2024-06-27T23:06:46.662657
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_004T13_9000006022_44805cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44805cztM0_level2_quad_clean.evt
Size (bytes)661,340,16085,656,960
Size630.7 MB 81.7 MB
Events in quadrant A11,123,121370,124
Events in quadrant B3,308,476663,432
Events in quadrant C2,633,752642,552
Events in quadrant D6,962,235508,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370801
B0138071
C0120961
D0246681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5843305352.250556%
B58421592.721671%
C5843310.530549%
D5843109718.774602%

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 6953 5843 2923 2923 42.04% 50.03%
B 6952 5842 131 131 1.88% 2.24%
C 6953 5843 3 3 0.04% 0.05%
D 6953 5843 1136 1136 16.34% 19.44%

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 15 223 7471471 69346.51 519 506 107.7
A 10 83 1493312 13856.43 519 506 107.7
A 13 248 82944 765.2 519 506 107.7
B 0 189 421743 3278.0 646 625 128.5
B 0 190 49852 383.18 646 625 128.5
B 7 221 48559 373.12 646 625 128.5
C 14 254 60767 398.54 643 646 150.9
C 2 14 28660 185.7 643 646 150.9
C 3 233 17210 109.8 643 646 150.9
D 13 187 1736954 11475.55 599 578 151.3
D 1 52 947440 6257.72 599 578 151.3
D 13 249 540222 3566.45 599 578 151.3

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