ASTROSAT CZTI

Data Quality Report

Orbit 14491

Creation date: 2024-06-27T16:55:56.373558
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_034T02_9000002136_14491cztM0_level2.evt modeM0/AS1G08_034T02_9000002136_14491cztM0_level2_quad_clean.evt
Size (bytes)84,024,00022,631,040
Size80.1 MB 21.6 MB
Events in quadrant A524,527152,133
Events in quadrant B877,946149,576
Events in quadrant C531,348151,884
Events in quadrant D531,619146,080

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032731025
B044311074
C03241948
D03346993

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319
B0319
C03210
D03210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111200.000000%
B1115484.304933%
C113810.087873%
D111660.537634%

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 1369 1174 0 0 0.00% 0.00%
B 1339 1195 35 35 2.61% 2.93%
C 1403 1212 0 0 0.00% 0.00%
D 1409 1192 7 7 0.50% 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 12 189 17286 597.51 131 128 28.7
A 9 143 1831 59.31 131 128 28.7
A 8 15 1312 41.23 131 128 28.7
B 15 222 197574 7104.08 132 129 27.8
B 10 245 158765 5707.73 132 129 27.8
B 12 111 2763 94.77 132 129 27.8
C 3 233 14214 428.82 132 133 32.8
C 0 207 1095 29.3 132 133 32.8
C 13 61 979 25.76 132 133 32.8
D 10 199 43682 1331.14 126 123 32.7
D 2 234 3920 116.03 126 123 32.7
D 15 0 3806 112.55 126 123 32.7

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