ASTROSAT CZTI

Data Quality Report

Orbit 20191002_A07_006T04_9000003210_level2

Creation date: 2025-12-04T10:35:33.560459
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_006T04_9000003210cztM0_level2.fits modeM0/AS1A07_006T04_9000003210cztM0_level2_quad_clean.evt
Size (bytes)427,262,400506,750,400
Size407.5 MB 483.3 MB
Events in quadrant A2,609,7503,178,265
Events in quadrant B2,478,8963,238,864
Events in quadrant C2,552,0543,057,762
Events in quadrant D2,159,5502,735,903

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09280
B09280
C09280
D09280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0961490
B0993610
C01027760
D01301430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A457157661.675599%
B4571515293.344635%
C4571513783.014328%
D4571530536.678333%

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 54442 45719 0 0 0.00% 0.00%
B 54442 45397 0 0 0.00% 0.00%
C 54442 45718 0 0 0.00% 0.00%
D 54442 45614 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 2457 10.64 679 637 171.0
A 7 110 2110 8.61 679 637 171.0
A 9 19 1944 7.64 679 637 171.0
B 2 9 2079 11.19 655 626 129.8
B 2 8 1764 8.77 655 626 129.8
B 5 232 1612 7.59 655 626 129.8
C 12 241 1898 7.29 673 627 174.4
C 3 234 1734 6.35 673 627 174.4
C 12 250 1716 6.24 673 627 174.4
D 3 14 1598 6.23 616 558 166.9
D 6 231 1568 6.05 616 558 166.9
D 6 67 1568 6.05 616 558 166.9

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