ASTROSAT CZTI

Data Quality Report

Orbit 13450

Creation date: 2024-06-27T16:40:59.261440
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/AS1A04_103T01_9000001988_13450cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13450cztM0_level2_quad_clean.evt
Size (bytes)513,976,320104,114,880
Size490.2 MB 99.3 MB
Events in quadrant A3,657,381658,275
Events in quadrant B3,902,871675,594
Events in quadrant C3,640,091655,147
Events in quadrant D3,830,314616,493

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163182
B0168731
C0162251
D0170581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7882410.520173%
B7882901.141842%
C7882190.241056%
D78821051.332149%

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 9253 7884 0 0 0.00% 0.00%
B 9253 7885 16 16 0.17% 0.20%
C 9253 7885 0 0 0.00% 0.00%
D 9253 7884 87 87 0.94% 1.10%

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 15299 73.77 944 922 194.9
A 0 226 8392 38.33 944 922 194.9
A 12 194 7169 32.06 944 922 194.9
B 3 64 81681 443.96 947 922 181.9
B 4 142 45817 246.8 947 922 181.9
B 4 173 37958 203.6 947 922 181.9
C 3 233 65210 302.97 915 921 212.2
C 13 61 6799 27.7 915 921 212.2
C 14 234 3630 12.77 915 921 212.2
D 13 249 311491 1433.56 897 872 216.7
D 2 136 51232 232.42 897 872 216.7
D 13 122 43668 197.51 897 872 216.7

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