ASTROSAT CZTI

Data Quality Report

Orbit 42128

Creation date: 2024-06-27T22:37:16.354550
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/AS1A12_061T07_9000005752_42128cztM0_level2.fits modeM0/AS1A12_061T07_9000005752_42128cztM0_level2_quad_clean.evt
Size (bytes)251,965,44073,131,840
Size240.3 MB 69.7 MB
Events in quadrant A2,174,091497,180
Events in quadrant B1,904,018513,886
Events in quadrant C1,982,108483,222
Events in quadrant D2,942,563428,413

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088251
B084531
C083451
D0115331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A414670.168837%
B414690.217077%
C414610.024120%
D41462014.848046%

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 4146 4146 1 1 0.02% 0.02%
B 4146 4146 7 7 0.17% 0.17%
C 4146 4146 0 0 0.00% 0.00%
D 4146 4146 181 181 4.37% 4.37%

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 348205 3595.55 471 463 96.7
A 3 137 5188 48.86 471 463 96.7
A 13 254 4630 43.09 471 463 96.7
B 5 255 29355 320.93 468 456 90.0
B 0 229 18016 195.01 468 456 90.0
B 0 183 17784 192.43 468 456 90.0
C 15 214 167738 1531.1 465 467 109.2
C 13 61 3107 24.16 465 467 109.2
C 12 249 1997 14.0 465 467 109.2
D 13 249 634545 5765.02 453 441 110.0
D 1 52 445106 4042.72 453 441 110.0
D 12 6 120986 1095.95 453 441 110.0

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