ASTROSAT CZTI

Data Quality Report

Orbit 50882

Creation date: 2025-02-23T14:27:21.578559
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/AS1C07_001T01_9000006450_50882cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50882cztM0_level2_quad_clean.evt
Size (bytes)468,377,28087,511,680
Size446.7 MB 83.5 MB
Events in quadrant A3,780,931563,701
Events in quadrant B2,973,118623,652
Events in quadrant C5,385,897540,022
Events in quadrant D4,720,545492,781

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153351
B0133141
C0202771
D0184351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61472504.067025%
B61481011.642811%
C61483135.091087%
D61484617.498373%

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 7072 6148 138 138 1.95% 2.24%
B 7073 6149 26 26 0.37% 0.42%
C 7073 6149 262 262 3.70% 4.26%
D 7073 6149 397 397 5.61% 6.46%

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 4 249 307729 1953.22 643 629 157.2
A 7 206 295894 1877.94 643 629 157.2
A 5 240 145933 924.16 643 629 157.2
B 4 206 97976 699.18 646 622 139.2
B 4 81 61738 438.92 646 622 139.2
B 7 252 59576 423.4 646 622 139.2
C 5 10 954800 5692.55 617 613 167.6
C 10 171 604641 3603.55 617 613 167.6
C 3 233 301872 1797.27 617 613 167.6
D 11 245 1239930 7338.48 608 586 168.9
D 2 216 431272 2550.2 608 586 168.9
D 2 249 176512 1041.7 608 586 168.9

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