ASTROSAT CZTI

Data Quality Report

Orbit 15877

Creation date: 2024-06-27T17:14:39.621455
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_143T01_9000002344_15877cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15877cztM0_level2_quad_clean.evt
Size (bytes)440,726,40096,707,520
Size420.3 MB 92.2 MB
Events in quadrant A3,288,822628,878
Events in quadrant B3,328,471652,776
Events in quadrant C3,230,348616,869
Events in quadrant D3,084,862603,897

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136763
B0138102
C0134142
D0131782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6101681.114571%
B6101741.212916%
C6101731.196525%
D6101260.426160%

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 7432 6103 13 13 0.17% 0.21%
B 7432 6103 5 5 0.07% 0.08%
C 7432 6103 0 0 0.00% 0.00%
D 7432 6103 8 8 0.11% 0.13%

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 15 239 145440 893.93 808 793 161.8
A 13 248 21223 126.26 808 793 161.8
A 15 157 11226 64.48 808 793 161.8
B 5 65 51507 329.66 820 802 153.8
B 4 173 19090 118.9 820 802 153.8
B 12 111 17062 105.72 820 802 153.8
C 14 238 121860 663.9 784 793 182.4
C 3 233 26501 140.98 784 793 182.4
C 0 207 12171 62.39 784 793 182.4
D 10 70 42301 214.18 790 767 193.9
D 1 52 34068 171.73 790 767 193.9
D 2 234 25492 127.5 790 767 193.9

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