ASTROSAT CZTI

Data Quality Report

Orbit 50656

Creation date: 2025-02-08T09:36:33.785747
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_50656cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50656cztM0_level2_quad_clean.evt
Size (bytes)562,055,040103,371,840
Size536.0 MB 98.6 MB
Events in quadrant A5,779,971647,329
Events in quadrant B3,998,807730,920
Events in quadrant C6,158,378634,519
Events in quadrant D4,305,270611,761

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222981
B0170971
C0234181
D0182222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72613845.288528%
B72611371.886792%
C72624876.706142%
D72611431.969426%

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 7786 7262 304 304 3.90% 4.19%
B 7786 7262 56 56 0.72% 0.77%
C 7787 7263 361 361 4.64% 4.97%
D 7786 7262 120 120 1.54% 1.65%

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 4 4 968713 5255.56 748 730 184.2
A 12 80 398400 2159.11 748 730 184.2
A 6 161 297308 1610.24 748 730 184.2
B 10 247 220069 1373.74 757 731 159.7
B 5 185 140130 873.07 757 731 159.7
B 4 206 100903 627.39 757 731 159.7
C 4 5 830654 4109.39 732 728 202.0
C 15 1 666530 3296.72 732 728 202.0
C 15 174 565504 2796.49 732 728 202.0
D 9 49 237056 1158.01 733 706 204.1
D 15 108 202329 987.87 733 706 204.1
D 7 60 118438 576.84 733 706 204.1

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