ASTROSAT CZTI

Data Quality Report

Orbit 15727

Creation date: 2024-06-27T17:12:37.537855
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/AS1G08_030T01_9000002326_15727cztM0_level2.evt modeM0/AS1G08_030T01_9000002326_15727cztM0_level2_quad_clean.evt
Size (bytes)246,706,56035,144,640
Size235.3 MB 33.5 MB
Events in quadrant A1,684,398208,806
Events in quadrant B1,731,554210,504
Events in quadrant C2,057,477199,347
Events in quadrant D1,760,621198,901

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072182
B072861
C084341
D075331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3468230.663206%
B3468361.038062%
C3468411.182238%
D3468180.519031%

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 4254 3470 0 0 0.00% 0.00%
B 4254 3470 4 4 0.09% 0.12%
C 4254 3470 0 0 0.00% 0.00%
D 4254 3470 6 6 0.14% 0.17%

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 13 248 17910 196.97 429 420 88.8
A 9 143 11608 126.0 429 420 88.8
A 0 226 3756 37.57 429 420 88.8
B 4 173 19807 228.46 426 415 84.9
B 5 236 15529 178.06 426 415 84.9
B 12 111 9808 110.66 426 415 84.9
C 3 233 387955 3992.42 410 414 97.1
C 14 238 62483 639.43 410 414 97.1
C 10 187 3358 30.33 410 414 97.1
D 1 52 143024 1377.53 414 401 103.5
D 12 110 25417 241.62 414 401 103.5
D 2 234 14774 138.82 414 401 103.5

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