ASTROSAT CZTI

Data Quality Report

Orbit 22459

Creation date: 2024-06-27T18:41:23.582436
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/AS1A07_065T01_9000003338_22459cztM0_level2.evt modeM0/AS1A07_065T01_9000003338_22459cztM0_level2_quad_clean.evt
Size (bytes)479,612,16074,456,640
Size457.4 MB 71.0 MB
Events in quadrant A3,407,946450,716
Events in quadrant B3,627,909451,291
Events in quadrant C3,473,538432,213
Events in quadrant D3,537,838430,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144612
B0150712
C0146173
D0151862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7036670.952246%
B70361301.847641%
C70351261.791045%
D70351091.549396%

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 7921 7036 0 0 0.00% 0.00%
B 7921 7036 23 23 0.29% 0.33%
C 7920 7035 11 11 0.14% 0.16%
D 7920 7035 38 38 0.48% 0.54%

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 13 254 9732 49.52 881 860 179.2
A 3 1 8754 44.06 881 860 179.2
A 3 137 7717 38.27 881 860 179.2
B 0 244 167674 992.14 870 847 168.1
B 0 190 35891 208.41 870 847 168.1
B 12 111 20646 117.75 870 847 168.1
C 14 238 133260 672.89 838 842 196.8
C 10 22 63053 316.13 838 842 196.8
C 9 54 6144 26.94 838 842 196.8
D 1 52 198616 952.55 855 829 207.6
D 2 136 40743 192.23 855 829 207.6
D 2 234 31520 147.81 855 829 207.6

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