ASTROSAT CZTI

Data Quality Report

Orbit 35687

Creation date: 2022-05-05T09:40:13.634659
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/AS1A09_029T04_9000005110_35687cztM0_level2.evt modeM0/AS1A09_029T04_9000005110_35687cztM0_level2_quad_clean.evt
Size (bytes)421,096,32065,485,440
Size401.6 MB 62.5 MB
Events in quadrant A2,876,020397,803
Events in quadrant B3,472,239397,950
Events in quadrant C2,860,759397,227
Events in quadrant D3,139,818374,690

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122723
B0142292
C0120862
D0134862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A593080.134907%
B59301672.816189%
C593090.151771%
D59301252.107926%

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 8646 5932 1 1 0.01% 0.02%
B 8646 5931 121 121 1.40% 2.04%
C 8646 5932 6 6 0.07% 0.10%
D 8646 5932 102 102 1.18% 1.72%

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 10 83 154549 1136.05 672 658 135.5
A 15 223 115634 848.77 672 658 135.5
A 13 6 7464 50.24 672 658 135.5
B 5 172 673185 5237.93 662 644 128.4
B 5 255 71802 554.2 662 644 128.4
B 0 190 57690 444.29 662 644 128.4
C 15 214 251300 1649.0 651 654 152.0
C 0 10 57193 371.97 651 654 152.0
C 9 187 7039 42.01 651 654 152.0
D 10 118 177265 1118.52 645 626 157.9
D 13 249 173149 1092.46 645 626 157.9
D 2 249 86733 545.25 645 626 157.9

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