ASTROSAT CZTI

Data Quality Report

Orbit 20191219_A07_054T01_9000003378_level2

Creation date: 2025-12-06T19:44:48.431119
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/AS1A07_054T01_9000003378cztM0_level2.fits modeM0/AS1A07_054T01_9000003378cztM0_level2_quad_clean.evt
Size (bytes)939,098,8801,144,635,840
Size895.6 MB 1.1 GB
Events in quadrant A5,896,0127,519,314
Events in quadrant B5,579,3687,432,736
Events in quadrant C5,614,7706,972,204
Events in quadrant D4,777,6726,171,824

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01690
C01690
D01690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019540
B019540
C019540
D019540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01988700
B01994920
C01967390
D02790380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A958685890.614386%
B958677640.796937%
C9586710741.120302%
D9586761396.403663%

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 117189 95868 0 0 0.00% 0.00%
B 117189 95866 0 0 0.00% 0.00%
C 117189 95867 0 0 0.00% 0.00%
D 117189 95815 0 0 0.00% 0.00%

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 0 29 5571 10.91 1536 1451 377.6
A 7 110 4666 8.51 1536 1451 377.6
A 0 30 4399 7.81 1536 1451 377.6
B 2 9 4366 10.34 1478 1421 284.9
B 5 128 3781 8.28 1478 1421 284.9
B 5 255 3687 7.95 1478 1421 284.9
C 3 234 3985 6.87 1482 1391 377.8
C 12 241 3979 6.85 1482 1391 377.8
C 3 235 3836 6.47 1482 1391 377.8
D 3 14 3461 5.97 1370 1252 370.1
D 6 67 3402 5.81 1370 1252 370.1
D 7 3 3370 5.72 1370 1252 370.1

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