ASTROSAT CZTI

Data Quality Report

Orbit 28607

Creation date: 2024-06-27T19:53:58.258217
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/AS1A10_045T06_9000004108_28607cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28607cztM0_level2_quad_clean.evt
Size (bytes)648,400,32083,802,240
Size618.4 MB 79.9 MB
Events in quadrant A3,882,502509,511
Events in quadrant B3,868,929513,960
Events in quadrant C3,910,847498,891
Events in quadrant D7,455,095481,535

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165423
B0163353
C0163543
D0275383

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76631241.618165%
B76631491.944408%
C76642032.648747%
D766378010.178781%

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 8373 7666 16 16 0.19% 0.21%
B 8373 7664 0 0 0.00% 0.00%
C 8374 7666 2 2 0.02% 0.03%
D 8373 7665 515 515 6.15% 6.72%

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 15 47 118870 597.55 970 948 197.3
A 13 254 14667 69.52 970 948 197.3
A 8 192 13977 66.02 970 948 197.3
B 0 230 31725 164.9 960 934 186.7
B 10 245 28979 150.19 960 934 186.7
B 12 111 22902 117.65 960 934 186.7
C 14 238 150882 687.95 931 936 218.0
C 7 247 67510 305.44 931 936 218.0
C 3 233 31033 138.08 931 936 218.0
D 1 52 2126552 9543.73 915 889 222.7
D 8 195 1379223 6188.4 915 889 222.7
D 13 104 154262 688.61 915 889 222.7

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