ASTROSAT CZTI

Data Quality Report

Orbit 21712

Creation date: 2024-06-27T18:31:19.204881
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_039T01_9000003216_21712cztM0_level2.evt modeM0/AS1A07_039T01_9000003216_21712cztM0_level2_quad_clean.evt
Size (bytes)386,798,400113,817,600
Size368.9 MB 108.5 MB
Events in quadrant A2,620,505765,539
Events in quadrant B2,960,951796,778
Events in quadrant C2,906,833767,537
Events in quadrant D2,858,608739,627

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112341
B0121891
C0119361
D0120111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5392210.389466%
B5392761.409496%
C5392510.945846%
D5392230.426558%

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 6752 5393 3 3 0.04% 0.06%
B 6752 5393 23 23 0.34% 0.43%
C 6752 5393 0 0 0.00% 0.00%
D 6752 5393 15 15 0.22% 0.28%

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 10 253 52645 391.21 665 652 132.9
A 13 254 9077 63.39 665 652 132.9
A 0 226 5648 37.59 665 652 132.9
B 3 64 152778 1226.53 673 656 124.0
B 0 230 56715 451.99 673 656 124.0
B 0 189 55661 443.5 673 656 124.0
C 8 208 222741 1453.01 660 664 152.8
C 14 238 107273 697.52 660 664 152.8
C 10 23 4603 25.77 660 664 152.8
D 12 235 162475 1031.24 656 638 156.9
D 1 52 86235 545.43 656 638 156.9
D 2 136 50976 320.76 656 638 156.9

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