ASTROSAT CZTI

Data Quality Report

Orbit 22115

Creation date: 2024-06-27T18:36:59.846457
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_007T04_9000003272_22115cztM0_level2.evt modeM0/AS1A07_007T04_9000003272_22115cztM0_level2_quad_clean.evt
Size (bytes)645,779,52067,867,200
Size615.9 MB 64.7 MB
Events in quadrant A3,267,741443,768
Events in quadrant B3,378,661452,003
Events in quadrant C3,293,175420,746
Events in quadrant D9,181,389287,846

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135422
B0139232
C0136712
D0316262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6441130.201832%
B6441360.558919%
C6441620.962583%
D6441226435.149821%

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 7681 6442 0 0 0.00% 0.00%
B 7681 6442 8 8 0.10% 0.12%
C 7681 6442 6 6 0.08% 0.09%
D 7681 6442 2156 2156 28.07% 33.47%

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 11512 63.41 844 830 168.5
A 15 174 11416 62.84 844 830 168.5
A 0 226 7262 38.18 844 830 168.5
B 3 64 61386 384.78 839 820 157.4
B 0 230 19115 116.23 839 820 157.4
B 12 111 18890 114.8 839 820 157.4
C 14 238 129568 702.02 797 805 183.4
C 5 4 33772 179.74 797 805 183.4
C 10 22 20350 106.56 797 805 183.4
D 2 133 5138933 31908.31 666 646 161.0
D 1 52 1048563 6507.47 666 646 161.0
D 7 238 176623 1092.8 666 646 161.0

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