ASTROSAT CZTI

Data Quality Report

Orbit 20190825_A06_009T03_9000003122_level2

Creation date: 2025-12-03T08:14:06.151232
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/AS1A06_009T03_9000003122cztM0_level2.fits modeM0/AS1A06_009T03_9000003122cztM0_level2_quad_clean.evt
Size (bytes)432,112,320277,925,760
Size412.1 MB 265.1 MB
Events in quadrant A2,678,9861,443,473
Events in quadrant B2,589,3561,429,353
Events in quadrant C2,635,9341,387,834
Events in quadrant D2,211,8101,184,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01034590
B0992590
C0914010
D01285310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0970
C0960
D0970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08810
B08760
C08770
D08760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4327810152.345302%
B432358832.042327%
C433217491.728954%
D4323222925.301628%

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 55211 43712 0 0 0.00% 0.00%
B 55211 43707 0 0 0.00% 0.00%
C 55211 43774 0 0 0.00% 0.00%
D 55209 43672 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 2586 11.25 697 655 171.6
A 7 110 2153 8.72 697 655 171.6
A 0 30 2031 8.01 697 655 171.6
B 2 9 2009 10.02 684 654 135.2
B 14 254 1731 7.96 684 654 135.2
B 5 225 1728 7.94 684 654 135.2
C 12 249 1800 6.39 695 651 179.9
C 12 241 1764 6.19 695 651 179.9
C 9 233 1759 6.16 695 651 179.9
D 3 14 1687 6.52 633 576 170.3
D 10 189 1572 5.85 633 576 170.3
D 1 31 1557 5.76 633 576 170.3

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