ASTROSAT CZTI

Data Quality Report

Orbit 38795

Creation date: 2024-06-27T21:56:30.834744
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_044T04_9000005396_38795cztM0_level2.fits modeM0/AS1A12_044T04_9000005396_38795cztM0_level2_quad_clean.evt
Size (bytes)401,477,76095,520,960
Size382.9 MB 91.1 MB
Events in quadrant A2,910,617652,409
Events in quadrant B3,010,246680,520
Events in quadrant C3,039,581638,803
Events in quadrant D5,494,461554,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117513
B0121402
C0120132
D0200112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5231250.477920%
B5231701.338176%
C5231490.936723%
D52314057.742305%

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 7324 5232 14 14 0.19% 0.27%
B 7324 5232 47 47 0.64% 0.90%
C 7324 5232 41 41 0.56% 0.78%
D 7324 5231 341 341 4.66% 6.52%

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 390494 3183.97 609 599 122.5
A 12 16 71598 579.79 609 599 122.5
A 9 143 40635 326.94 609 599 122.5
B 5 184 225851 1915.39 617 602 117.6
B 4 171 200825 1702.58 617 602 117.6
B 0 230 62294 524.59 617 602 117.6
C 15 208 317381 2265.52 606 610 139.8
C 15 214 230497 1644.13 606 610 139.8
C 14 254 72323 512.89 606 610 139.8
D 12 235 2165319 15251.6 586 570 141.9
D 2 16 408133 2871.46 586 570 141.9
D 12 227 233673 1642.31 586 570 141.9

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