ASTROSAT CZTI

Data Quality Report

Orbit 53374

Creation date: 2025-08-10T11:42:02.266944
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/AS1C09_011T09_9000006494_53374cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53374cztM0_level2_quad_clean.evt
Size (bytes)789,520,320100,428,480
Size752.9 MB 95.8 MB
Events in quadrant A5,223,741681,378
Events in quadrant B5,969,963740,262
Events in quadrant C13,129,294433,414
Events in quadrant D4,305,816649,581

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211560
B0230260
C0443500
D0183441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77024806.232147%
B77035697.386732%
C7703322941.918733%
D77021511.960530%

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 7702 7702 382 382 4.96% 4.96%
B 7703 7703 251 251 3.26% 3.26%
C 7702 7702 3046 3046 39.55% 39.55%
D 7702 7702 117 117 1.52% 1.52%

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 15 174 1236353 6428.21 774 757 192.2
A 8 245 446389 2318.41 774 757 192.2
A 0 8 103387 533.93 774 757 192.2
B 4 206 830311 4962.09 782 752 167.2
B 10 254 594551 3551.87 782 752 167.2
B 10 28 409138 2442.8 782 752 167.2
C 15 178 8063458 46124.89 634 629 174.8
C 15 224 1305368 7464.0 634 629 174.8
C 1 241 749307 4282.95 634 629 174.8
D 11 245 472798 2185.46 765 732 216.0
D 2 249 179131 825.91 765 732 216.0
D 7 70 122054 561.67 765 732 216.0

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