ASTROSAT CZTI

Data Quality Report

Orbit 19225

Creation date: 2024-06-27T18:00:11.135395
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/AS1A05_007T06_9000002844_19225cztM0_level2.evt modeM0/AS1A05_007T06_9000002844_19225cztM0_level2_quad_clean.evt
Size (bytes)465,661,440103,412,160
Size444.1 MB 98.6 MB
Events in quadrant A3,215,636656,881
Events in quadrant B3,268,881678,168
Events in quadrant C3,783,995664,669
Events in quadrant D3,361,629647,843

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144072
B0143952
C0157012
D0151802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6957360.517464%
B6957420.603708%
C69571041.494897%
D6957701.006181%

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 7647 6958 7 7 0.09% 0.10%
B 7647 6958 0 0 0.00% 0.00%
C 7647 6958 1 1 0.01% 0.01%
D 7647 6958 24 24 0.31% 0.34%

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 9 143 61959 370.91 817 800 164.9
A 13 254 9814 54.67 817 800 164.9
A 0 226 6985 37.51 817 800 164.9
B 0 214 21400 131.5 827 804 156.6
B 12 111 19294 118.05 827 804 156.6
B 11 111 16523 100.36 827 804 156.6
C 3 233 512997 2738.57 802 807 187.0
C 14 238 126382 671.42 802 807 187.0
C 5 4 10296 50.74 802 807 187.0
D 11 176 186932 950.78 803 779 195.8
D 9 68 93854 475.38 803 779 195.8
D 2 234 26900 133.41 803 779 195.8

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