ASTROSAT CZTI

Data Quality Report

Orbit 20160621_G05_229T02_9000000508_level2

Creation date: 2025-10-31T01:38:53.308382
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/AS1G05_229T02_9000000508cztM0_level2.fits modeM0/AS1G05_229T02_9000000508cztM0_level2_quad_clean.evt
Size (bytes)414,728,640407,062,080
Size395.5 MB 388.2 MB
Events in quadrant A2,490,6242,409,777
Events in quadrant B2,417,5242,414,320
Events in quadrant C2,464,0342,314,321
Events in quadrant D2,099,6662,101,870

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09160
B09160
C09160
D09160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0983590
B01004290
C0934790
D01038490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4498410662.369731%
B449849962.214121%
C449836521.449436%
D4498411972.660946%

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 51820 44983 0 0 0.00% 0.00%
B 51820 44981 0 0 0.00% 0.00%
C 51820 44985 0 0 0.00% 0.00%
D 51820 44977 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 2500 11.2 647 601 169.5
A 7 110 2071 8.67 647 601 169.5
A 0 30 1920 7.78 647 601 169.5
B 2 9 2119 11.79 637 606 128.3
B 12 226 1722 8.7 637 606 128.3
B 14 254 1695 8.48 637 606 128.3
C 1 80 1723 6.41 651 601 175.0
C 1 81 1710 6.34 651 601 175.0
C 9 242 1694 6.24 651 601 175.0
D 11 82 1767 7.58 598 540 161.8
D 3 14 1624 6.7 598 540 161.8
D 6 231 1542 6.19 598 540 161.8

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