ASTROSAT CZTI

Data Quality Report

Orbit 39382

Creation date: 2024-06-27T22:03:54.992492
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/AS1A12_018T01_9000005470_39382cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39382cztM0_level2_quad_clean.evt
Size (bytes)748,730,880127,434,240
Size714.0 MB 121.5 MB
Events in quadrant A4,213,175918,348
Events in quadrant B5,996,027917,264
Events in quadrant C3,944,587883,509
Events in quadrant D12,912,319556,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175972
B0236031
C0170231
D0441161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8381200.238635%
B83813083.674979%
C8381120.143181%
D8381312037.227061%

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 9724 8382 8 8 0.08% 0.10%
B 9724 8382 195 195 2.01% 2.33%
C 9724 8382 6 6 0.06% 0.07%
D 9724 8382 2578 2578 26.51% 30.76%

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 544061 2911.73 912 893 186.5
A 2 79 90819 482.06 912 893 186.5
A 15 191 54202 285.77 912 893 186.5
B 6 203 1475334 8574.93 897 871 172.0
B 5 200 637542 3702.64 897 871 172.0
B 5 172 331311 1921.72 897 871 172.0
C 15 214 346566 1670.79 892 895 206.9
C 9 187 38478 181.66 892 895 206.9
C 14 254 24063 111.98 892 895 206.9
D 12 235 9232542 50153.41 752 730 184.1
D 13 249 592713 3216.05 752 730 184.1
D 2 249 90935 490.05 752 730 184.1

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