ASTROSAT CZTI

Data Quality Report

Orbit 26120

Creation date: 2024-06-27T19:25:03.028877
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/AS1A09_138T04_9000003776_26120cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26120cztM0_level2_quad_clean.evt
Size (bytes)659,136,960101,972,160
Size628.6 MB 97.2 MB
Events in quadrant A3,953,587638,506
Events in quadrant B4,077,348651,349
Events in quadrant C4,075,474613,715
Events in quadrant D7,279,565594,265

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172280
B0174260
C0174980
D0273020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8495550.647440%
B8495630.741613%
C84951031.212478%
D8496131315.454331%

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 9000 8495 0 0 0.00% 0.00%
B 9000 8495 0 0 0.00% 0.00%
C 9000 8495 2 2 0.02% 0.02%
D 9001 8496 1145 1145 12.72% 13.48%

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 0 13 16278 74.24 1019 997 205.8
A 13 254 13389 60.2 1019 997 205.8
A 3 137 9486 41.24 1019 997 205.8
B 5 172 39840 198.86 1013 986 195.4
B 0 190 33503 166.42 1013 986 195.4
B 0 229 29802 147.48 1013 986 195.4
C 14 238 155582 676.97 972 975 228.4
C 3 233 82778 358.19 972 975 228.4
C 2 16 38961 166.33 972 975 228.4
D 7 80 2495002 11264.66 908 882 221.4
D 12 233 1110828 5013.05 908 882 221.4
D 1 52 135417 607.62 908 882 221.4

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