ASTROSAT CZTI

Data Quality Report

Orbit 27187

Creation date: 2024-06-27T19:37:30.900071
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/AS1T03_243T01_9000003918_27187cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27187cztM0_level2_quad_clean.evt
Size (bytes)587,894,40097,724,160
Size560.7 MB 93.2 MB
Events in quadrant A3,553,283631,519
Events in quadrant B3,589,848648,012
Events in quadrant C3,415,031615,156
Events in quadrant D6,765,669570,276

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150370
B0150030
C0145880
D0251000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7099530.746584%
B7099700.986054%
C7099791.112833%
D70994245.972672%

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 7650 7101 7 7 0.09% 0.10%
B 7650 7101 3 3 0.04% 0.04%
C 7650 7101 0 0 0.00% 0.00%
D 7650 7101 423 423 5.53% 5.96%

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 15 174 82082 462.83 873 857 175.5
A 6 16 44795 250.36 873 857 175.5
A 13 248 27719 153.06 873 857 175.5
B 3 112 90870 538.18 875 853 167.3
B 12 111 20308 116.31 875 853 167.3
B 5 172 20144 115.33 875 853 167.3
C 14 238 133641 671.15 839 845 197.9
C 2 16 11252 52.6 839 845 197.9
C 15 208 6229 27.21 839 845 197.9
D 1 52 2957522 14836.48 827 803 199.3
D 12 233 186584 932.23 827 803 199.3
D 2 250 163219 814.98 827 803 199.3

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