ASTROSAT CZTI

Data Quality Report

Orbit 12175

Creation date: 2024-06-27T16:23:24.734768
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_065T01_9000001796_12175cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12175cztM0_level2_quad_clean.evt
Size (bytes)579,945,60096,157,440
Size553.1 MB 91.7 MB
Events in quadrant A3,425,381636,855
Events in quadrant B6,751,880564,006
Events in quadrant C3,204,427631,962
Events in quadrant D3,728,259612,593

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146273
B0245452
C0139442
D0156152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66781522.276131%
B6678155923.345313%
C66781021.527403%
D66781752.620545%

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 8809 6681 4 4 0.05% 0.06%
B 8809 6681 962 962 10.92% 14.40%
C 8809 6681 2 2 0.02% 0.03%
D 8809 6681 63 63 0.72% 0.94%

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 84093 500.67 825 808 166.3
A 1 178 37387 219.9 825 808 166.3
A 1 161 34123 200.27 825 808 166.3
B 0 85 2189558 15339.78 748 730 142.7
B 4 239 1310820 9181.4 748 730 142.7
B 15 204 93794 652.21 748 730 142.7
C 3 233 24458 127.67 805 809 185.2
C 15 208 22655 117.93 805 809 185.2
C 14 234 12985 65.73 805 809 185.2
D 1 52 191193 989.33 802 781 192.5
D 4 95 117780 607.89 802 781 192.5
D 13 104 100607 518.67 802 781 192.5

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