ASTROSAT CZTI

Data Quality Report

Orbit 37364

Creation date: 2024-06-27T21:39:03.512283
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/AS1T05_048T01_9000005318_37364cztM0_level2.evt modeM0/AS1T05_048T01_9000005318_37364cztM0_level2_quad_clean.evt
Size (bytes)620,717,76067,291,200
Size592.0 MB 64.2 MB
Events in quadrant A2,602,117462,071
Events in quadrant B2,476,954472,407
Events in quadrant C2,664,082473,217
Events in quadrant D10,709,469270,641

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107873
B0105582
C0108372
D0354222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5096100.196232%
B5096180.353218%
C5096460.902669%
D5096339966.699372%

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 7037 5097 2 2 0.03% 0.04%
B 7037 5097 9 9 0.13% 0.18%
C 7037 5097 28 28 0.40% 0.55%
D 7037 5097 3273 3273 46.51% 64.21%

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 264290 2192.18 591 579 120.3
A 13 248 24091 195.45 591 579 120.3
A 9 143 10185 79.85 591 579 120.3
B 5 255 51437 446.44 589 575 113.9
B 5 200 32147 277.12 589 575 113.9
B 5 172 16464 139.47 589 575 113.9
C 15 214 220229 1614.35 580 585 136.1
C 0 10 88939 649.39 580 585 136.1
C 1 23 59338 431.83 580 585 136.1
D 12 235 8294510 74904.04 442 428 110.7
D 10 253 268186 2418.13 442 428 110.7
D 12 227 188610 1699.48 442 428 110.7

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