ASTROSAT CZTI

Data Quality Report

Orbit 39318

Creation date: 2024-06-27T22:03:10.491231
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_9000005468_39318cztM0_level2.fits modeM0/AS1A12_061T07_9000005468_39318cztM0_level2_quad_clean.evt
Size (bytes)337,080,96091,880,640
Size321.5 MB 87.6 MB
Events in quadrant A2,832,085622,839
Events in quadrant B2,418,634645,827
Events in quadrant C2,663,984616,109
Events in quadrant D4,174,251547,441

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112212
B0101931
C0106961
D0157611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4994210.420505%
B4994130.260312%
C4994220.440529%
D49942484.965959%

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 7086 4995 10 10 0.14% 0.20%
B 7086 4995 3 3 0.04% 0.06%
C 7086 4995 10 10 0.14% 0.20%
D 7086 4995 240 240 3.39% 4.80%

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 411079 3441.91 596 585 119.3
A 13 248 68571 570.05 596 585 119.3
A 15 222 42175 348.72 596 585 119.3
B 0 190 33190 290.14 593 578 112.4
B 5 172 31063 271.22 593 578 112.4
B 5 184 17065 146.68 593 578 112.4
C 15 214 228284 1682.52 586 590 135.3
C 9 187 74136 543.46 586 590 135.3
C 14 254 72666 532.6 586 590 135.3
D 12 235 1613172 11449.59 575 558 140.8
D 2 249 188186 1332.16 575 558 140.8
D 12 227 51912 364.61 575 558 140.8

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