ASTROSAT CZTI

Data Quality Report

Orbit 13307

Creation date: 2024-06-27T16:39:04.752200
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/AS1G08_023T01_9000001978_13307cztM0_level2.evt modeM0/AS1G08_023T01_9000001978_13307cztM0_level2_quad_clean.evt
Size (bytes)558,213,120120,677,760
Size532.4 MB 115.1 MB
Events in quadrant A3,926,860776,791
Events in quadrant B4,800,810789,063
Events in quadrant C3,819,413775,738
Events in quadrant D3,799,307741,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172732
B0198421
C0171141
D0173171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82292222.697776%
B82295636.841658%
C82292452.977275%
D82292022.454733%

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 8389 8232 0 0 0.00% 0.00%
B 8389 8232 130 130 1.55% 1.58%
C 8389 8232 0 0 0.00% 0.00%
D 8389 8232 4 4 0.05% 0.05%

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 1 162 60499 292.09 989 962 203.8
A 1 178 21761 102.04 989 962 203.8
A 1 161 19908 92.95 989 962 203.8
B 3 64 796434 4196.06 984 956 189.6
B 4 142 99782 521.3 984 956 189.6
B 3 209 23299 117.86 984 956 189.6
C 13 61 7128 27.11 977 979 226.8
C 8 222 5665 20.66 977 979 226.8
C 14 234 3251 10.02 977 979 226.8
D 2 136 44755 187.61 962 931 233.6
D 5 222 36067 150.42 962 931 233.6
D 8 195 35877 149.61 962 931 233.6

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