ASTROSAT CZTI

Data Quality Report

Orbit 22423

Creation date: 2024-06-27T18:41:11.293290
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/AS1T03_149T05_9000003324_22423cztM0_level2.evt modeM0/AS1T03_149T05_9000003324_22423cztM0_level2_quad_clean.evt
Size (bytes)234,322,56041,650,560
Size223.5 MB 39.7 MB
Events in quadrant A1,686,738258,068
Events in quadrant B1,758,690265,472
Events in quadrant C1,730,861251,729
Events in quadrant D1,688,910246,018

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071212
B072661
C071301
D071911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3382250.739208%
B3382300.887049%
C3382591.744530%
D3382160.473093%

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 4547 3383 1 1 0.02% 0.03%
B 4547 3383 1 1 0.02% 0.03%
C 4547 3383 1 1 0.02% 0.03%
D 4547 3383 1 1 0.02% 0.03%

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 4670 47.84 436 427 88.7
A 15 48 3969 39.93 436 427 88.7
A 3 137 3724 37.17 436 427 88.7
B 3 64 15511 178.67 437 425 84.4
B 0 190 14310 164.45 437 425 84.4
B 0 244 12631 144.56 437 425 84.4
C 14 238 67530 668.33 424 427 100.4
C 12 143 5127 46.81 424 427 100.4
C 0 10 3581 31.41 424 427 100.4
D 1 52 39790 377.94 426 414 104.2
D 15 145 14938 139.4 426 414 104.2
D 2 234 14908 139.12 426 414 104.2

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