ASTROSAT CZTI

Data Quality Report

Orbit 41961

Creation date: 2024-06-27T22:35:00.728765
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_025T15_9000005726_41961cztM0_level2.fits modeM0/AS1A12_025T15_9000005726_41961cztM0_level2_quad_clean.evt
Size (bytes)270,164,16069,793,920
Size257.6 MB 66.6 MB
Events in quadrant A2,600,287466,699
Events in quadrant B2,067,089478,997
Events in quadrant C2,009,890456,541
Events in quadrant D2,984,281405,483

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105621
B091851
C087481
D0120331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4344130.299263%
B4344160.368324%
C434410.023020%
D43442235.133517%

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 5837 4345 3 3 0.05% 0.07%
B 5837 4345 13 13 0.22% 0.30%
C 5837 4345 0 0 0.00% 0.00%
D 5837 4345 164 164 2.81% 3.77%

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 385002 3878.24 478 468 99.2
A 2 79 348817 3513.29 478 468 99.2
A 13 6 14315 139.65 478 468 99.2
B 5 255 115767 1218.52 475 461 94.6
B 0 190 51439 538.72 475 461 94.6
B 0 156 14109 144.23 475 461 94.6
C 15 214 186212 1670.86 466 468 111.2
C 13 61 3061 23.33 466 468 111.2
C 8 79 2947 22.3 466 468 111.2
D 13 249 666334 5910.95 451 436 112.7
D 5 222 362915 3217.6 451 436 112.7
D 12 6 64427 568.03 451 436 112.7

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