ASTROSAT CZTI

Data Quality Report

Orbit 20170519_G07_046T01_9000001236_level2

Creation date: 2025-11-13T16:42:52.782715
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/AS1G07_046T01_9000001236cztM0_level2.fits modeM0/AS1G07_046T01_9000001236cztM0_level2_quad_clean.evt
Size (bytes)375,488,640372,720,960
Size358.1 MB 355.5 MB
Events in quadrant A2,324,6982,321,730
Events in quadrant B2,124,7202,110,942
Events in quadrant C2,297,4842,196,866
Events in quadrant D2,012,3282,047,511

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0892610
B01117770
C0867490
D0863120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07820
B07820
C07820
D07820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A380048302.183981%
B38007390110.263899%
C380056061.594527%
D380067291.918118%

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 45666 38004 0 0 0.00% 0.00%
B 45666 37998 0 0 0.00% 0.00%
C 45666 38006 0 0 0.00% 0.00%
D 45666 38001 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 2377 12.01 603 565 150.9
A 7 110 1951 9.19 603 565 150.9
A 0 30 1819 8.31 603 565 150.9
B 2 9 1863 11.83 560 534 112.4
B 3 17 1420 7.88 560 534 112.4
B 14 254 1411 7.8 560 534 112.4
C 1 81 1707 7.14 607 564 160.0
C 1 80 1687 7.02 607 564 160.0
C 3 158 1536 6.08 607 564 160.0
D 3 14 1495 6.28 573 519 155.4
D 10 189 1490 6.25 573 519 155.4
D 6 231 1453 6.01 573 519 155.4

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