ASTROSAT CZTI

Data Quality Report

Orbit 38119

Creation date: 2024-06-27T21:48:38.375609
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/AS1A11_065T21_9000005364_38119cztM0_level2.fits modeM0/AS1A11_065T21_9000005364_38119cztM0_level2_quad_clean.evt
Size (bytes)351,567,36096,874,560
Size335.3 MB 92.4 MB
Events in quadrant A3,362,192651,596
Events in quadrant B2,792,409666,236
Events in quadrant C2,974,950630,246
Events in quadrant D3,433,584580,445

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135183
B0122852
C0123612
D0139112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5790250.431779%
B5790300.518135%
C5790560.967185%
D5790901.554404%

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 7163 5791 12 12 0.17% 0.21%
B 7163 5791 9 9 0.13% 0.16%
C 7163 5791 50 50 0.70% 0.86%
D 7163 5791 86 86 1.20% 1.49%

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 377862 2887.5 646 635 130.6
A 12 16 353289 2699.41 646 635 130.6
A 12 194 58578 443.53 646 635 130.6
B 0 229 193728 1542.36 643 624 125.2
B 5 172 40206 316.15 643 624 125.2
B 15 85 17651 136.0 643 624 125.2
C 15 214 240927 1648.16 627 630 145.8
C 0 239 228638 1563.87 627 630 145.8
C 3 233 31920 214.61 627 630 145.8
D 12 235 388639 2514.02 628 609 154.3
D 13 249 324839 2100.66 628 609 154.3
D 1 20 99839 642.9 628 609 154.3

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