ASTROSAT CZTI

Data Quality Report

Orbit 11179

Creation date: 2024-06-27T16:09:26.352984
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_171T01_9000001634_11179cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11179cztM0_level2_quad_clean.evt
Size (bytes)868,559,040111,934,080
Size828.3 MB 106.7 MB
Events in quadrant A7,096,246681,115
Events in quadrant B6,545,871682,219
Events in quadrant C4,687,658698,254
Events in quadrant D7,317,394654,281

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020610
B020612
C02068
D02068

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297371849
B0272541512
C022001964
D0303582174

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96697958.222153%
B9714103410.644431%
C97825465.581681%
D96529209.531703%

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 10336 9880 51 51 0.49% 0.52%
B 10336 9925 213 213 2.06% 2.15%
C 10336 9933 0 0 0.00% 0.00%
D 10336 9853 273 273 2.64% 2.77%

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 8 15 1372678 5569.08 1190 1158 246.3
A 8 5 993163 4028.05 1190 1158 246.3
A 14 238 88843 356.05 1190 1158 246.3
B 4 239 1397881 5930.39 1193 1161 235.5
B 10 16 156851 661.05 1193 1161 235.5
B 15 204 95756 401.65 1193 1161 235.5
C 13 61 9021 27.73 1200 1205 281.9
C 12 4 3870 9.45 1200 1205 281.9
C 14 234 3689 8.81 1200 1205 281.9
D 13 152 725393 2574.74 1152 1116 281.3
D 1 52 608190 2158.09 1152 1116 281.3
D 2 136 443328 1572.02 1152 1116 281.3

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