ASTROSAT CZTI

Data Quality Report

Orbit 22265

Creation date: 2024-06-27T18:38:46.031002
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/AS1A07_018T07_9000003294_22265cztM0_level2.evt modeM0/AS1A07_018T07_9000003294_22265cztM0_level2_quad_clean.evt
Size (bytes)492,952,32096,877,440
Size470.1 MB 92.4 MB
Events in quadrant A3,472,240622,424
Events in quadrant B3,572,764633,137
Events in quadrant C3,541,537595,207
Events in quadrant D3,855,505584,124

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147812
B0149532
C0150132
D0160922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71631331.856764%
B71631572.191819%
C71631592.219740%
D71631361.898646%

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 7723 7164 0 0 0.00% 0.00%
B 7723 7164 4 4 0.05% 0.06%
C 7723 7164 14 14 0.18% 0.20%
D 7723 7164 42 42 0.54% 0.59%

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 13 254 9863 49.57 900 881 181.2
A 3 137 7846 38.44 900 881 181.2
A 0 226 7571 36.92 900 881 181.2
B 4 171 39743 224.98 893 870 172.8
B 3 64 26525 148.48 893 870 172.8
B 12 111 21101 117.09 893 870 172.8
C 14 238 135262 676.05 852 858 198.8
C 10 22 79068 393.39 852 858 198.8
C 3 9 6442 28.09 852 858 198.8
D 1 52 476414 2239.8 869 843 212.3
D 2 234 25500 116.13 869 843 212.3
D 13 172 22118 100.2 869 843 212.3

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter