ASTROSAT CZTI

Data Quality Report

Orbit 25285

Creation date: 2024-06-27T19:15:53.351290
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_006T01_9000003700_25285cztM0_level2.evt modeM0/AS1A09_006T01_9000003700_25285cztM0_level2_quad_clean.evt
Size (bytes)413,369,28065,304,000
Size394.2 MB 62.3 MB
Events in quadrant A2,417,815439,601
Events in quadrant B3,036,361429,877
Events in quadrant C2,476,670415,976
Events in quadrant D4,265,114358,115

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099250
B0119520
C0101750
D0155200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A474980.168457%
B47491934.064013%
C4749481.010739%
D474976816.171826%

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 4749 4749 2 2 0.04% 0.04%
B 4749 4749 129 129 2.72% 2.72%
C 4749 4749 3 3 0.06% 0.06%
D 4749 4749 717 717 15.10% 15.10%

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 13 254 7715 56.99 624 613 124.6
A 13 170 6281 45.48 624 613 124.6
A 0 226 5291 37.54 624 613 124.6
B 3 64 641667 5598.59 608 594 114.5
B 12 111 13423 112.04 608 594 114.5
B 11 111 11967 99.32 608 594 114.5
C 14 238 96048 700.47 588 591 136.3
C 0 207 56951 413.57 588 591 136.3
C 2 16 19775 140.77 588 591 136.3
D 1 52 1949101 14390.13 560 546 135.4
D 8 195 141299 1039.46 560 546 135.4
D 12 233 36493 265.47 560 546 135.4

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