ASTROSAT CZTI

Data Quality Report

Orbit 07459

Creation date: 2024-06-27T15:20:03.007945
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/AS1A02_108T01_9000001024_07459cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07459cztM0_level2_quad_clean.evt
Size (bytes)892,468,80096,045,120
Size851.1 MB 91.6 MB
Events in quadrant A14,645,425473,323
Events in quadrant B3,609,884656,629
Events in quadrant C3,820,017633,480
Events in quadrant D4,433,043608,645

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0488682
B0161091
C0168091
D0184441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7692452558.827353%
B7692881.144046%
C76921441.872075%
D76922543.302132%

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 7957 7693 3934 3934 49.44% 51.14%
B 7957 7693 8 8 0.10% 0.10%
C 7957 7693 57 57 0.72% 0.74%
D 7957 7693 143 143 1.80% 1.86%

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 15 239 11860170 86262.67 673 658 137.5
A 15 234 179632 1301.81 673 658 137.5
A 0 128 11339 77.69 673 658 137.5
B 0 214 113212 655.52 897 875 171.4
B 12 111 18509 102.9 897 875 171.4
B 11 111 14592 80.04 897 875 171.4
C 1 16 370994 1835.07 862 867 201.7
C 10 22 54425 265.54 862 867 201.7
C 9 68 25161 120.45 862 867 201.7
D 1 52 310667 1491.62 853 827 207.7
D 2 136 260419 1249.72 853 827 207.7
D 2 14 190049 910.95 853 827 207.7

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