ASTROSAT CZTI

Data Quality Report

Orbit 07972

Creation date: 2024-06-27T15:26:12.808244
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/AS1G06_077T01_9000001090_07972cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07972cztM0_level2_quad_clean.evt
Size (bytes)492,929,28094,334,400
Size470.1 MB 90.0 MB
Events in quadrant A3,443,309589,180
Events in quadrant B3,525,707605,643
Events in quadrant C3,485,587602,171
Events in quadrant D3,998,281572,057

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149363
B0152912
C0150422
D0167012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7003831.185206%
B70031011.442239%
C7003751.070970%
D70031912.727403%

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 9193 7005 4 4 0.04% 0.06%
B 9193 7005 9 9 0.10% 0.13%
C 9193 7005 0 0 0.00% 0.00%
D 9193 7005 89 89 0.97% 1.27%

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 0 254 52565 295.5 862 845 175.0
A 0 128 47851 268.57 862 845 175.0
A 0 226 8043 41.13 862 845 175.0
B 4 239 71659 427.42 870 850 165.7
B 11 51 39252 231.81 870 850 165.7
B 0 168 26072 152.25 870 850 165.7
C 1 16 145738 734.93 853 859 197.1
C 8 208 7521 33.79 853 859 197.1
C 13 61 6423 28.22 853 859 197.1
D 1 52 497537 2436.26 842 816 203.9
D 4 95 159487 778.23 842 816 203.9
D 2 14 83432 405.2 842 816 203.9

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