ASTROSAT CZTI

Data Quality Report

Orbit 50667

Creation date: 2025-02-09T03:04:21.606576
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/AS1T05_241T01_9000006446_50667cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50667cztM0_level2_quad_clean.evt
Size (bytes)477,204,48096,603,840
Size455.1 MB 92.1 MB
Events in quadrant A4,743,138615,813
Events in quadrant B3,999,522687,059
Events in quadrant C4,656,529609,648
Events in quadrant D3,768,798565,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184922
B0163832
C0181772
D0158052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63983024.720225%
B63982233.485464%
C63982353.673023%
D63982133.329165%

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 7588 6399 242 242 3.19% 3.78%
B 7588 6399 118 118 1.56% 1.84%
C 7588 6399 181 181 2.39% 2.83%
D 7588 6398 103 103 1.36% 1.61%

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 9 191 602303 3535.85 685 671 170.2
A 8 38 416765 2445.43 685 671 170.2
A 12 113 312574 1833.08 685 671 170.2
B 4 170 301550 2045.6 692 669 147.1
B 5 185 205432 1392.12 692 669 147.1
B 0 229 188182 1274.85 692 669 147.1
C 15 174 449878 2379.28 686 680 188.8
C 15 231 333743 1764.15 686 680 188.8
C 0 224 330678 1747.91 686 680 188.8
D 10 102 223869 1186.13 674 649 188.2
D 7 96 181738 962.26 674 649 188.2
D 8 246 179757 951.73 674 649 188.2

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