ASTROSAT CZTI

Data Quality Report

Orbit 03926

Creation date: 2024-06-27T14:35:19.319129
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/AS1G05_172T01_9000000502_03926cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03926cztM0_level2_quad_clean.evt
Size (bytes)559,137,60089,507,520
Size533.2 MB 85.4 MB
Events in quadrant A4,133,598543,018
Events in quadrant B4,013,037550,498
Events in quadrant C3,578,848546,588
Events in quadrant D4,672,886522,489

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176983
B0168492
C0163682
D0193012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78864185.300533%
B78862813.563277%
C78862042.586863%
D78863884.920112%

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 8001 7889 68 68 0.85% 0.86%
B 8001 7889 2 2 0.02% 0.03%
C 8001 7889 0 0 0.00% 0.00%
D 8001 7889 102 102 1.27% 1.29%

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 50 291028 1526.23 921 898 190.1
A 0 118 153372 802.09 921 898 190.1
A 2 79 62993 326.65 921 898 190.1
B 15 204 210482 1159.89 930 903 180.7
B 3 0 123619 679.16 930 903 180.7
B 0 229 54328 295.67 930 903 180.7
C 8 128 20768 94.4 901 902 210.5
C 10 65 20663 93.9 901 902 210.5
C 8 112 9706 41.83 901 902 210.5
D 9 82 505223 2353.28 893 867 214.3
D 2 232 215051 999.36 893 867 214.3
D 1 7 169111 785.01 893 867 214.3

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
Veto Counter