ASTROSAT CZTI

Data Quality Report

Orbit 38181

Creation date: 2024-06-27T21:49:26.181589
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/AS1A07_145T01_9000005370_38181cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38181cztM0_level2_quad_clean.evt
Size (bytes)335,675,52096,900,480
Size320.1 MB 92.4 MB
Events in quadrant A3,050,550653,483
Events in quadrant B2,695,871664,227
Events in quadrant C2,827,230633,610
Events in quadrant D3,403,021579,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126193
B0119282
C0118752
D0139302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5762220.381812%
B5762410.711558%
C5762220.381812%
D57621422.464422%

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 7286 5763 14 14 0.19% 0.24%
B 7285 5761 32 32 0.44% 0.56%
C 7285 5761 19 19 0.26% 0.33%
D 7285 5761 127 127 1.74% 2.20%

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 398981 3017.33 645 630 132.0
A 9 143 80105 601.99 645 630 132.0
A 12 189 61806 463.38 645 630 132.0
B 5 172 81554 658.18 640 622 123.0
B 15 85 33823 270.0 640 622 123.0
B 0 230 23597 186.84 640 622 123.0
C 15 214 239259 1618.35 630 633 147.4
C 14 254 52716 353.22 630 633 147.4
C 3 233 32305 214.8 630 633 147.4
D 13 249 303589 1971.26 628 613 153.7
D 12 233 124691 807.29 628 613 153.7
D 7 55 78614 507.5 628 613 153.7

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