ASTROSAT CZTI

Data Quality Report

Orbit 07927

Creation date: 2024-06-27T15:25:36.640941
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/AS1A02_027T01_9000001084_07927cztM0_level2.evt modeM0/AS1A02_027T01_9000001084_07927cztM0_level2_quad_clean.evt
Size (bytes)465,266,88080,256,960
Size443.7 MB 76.5 MB
Events in quadrant A3,198,158483,872
Events in quadrant B3,598,796494,320
Events in quadrant C3,175,360502,098
Events in quadrant D3,659,856479,628

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140183
B0151902
C0139262
D0153922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6744470.696916%
B67441211.794187%
C6744370.548636%
D6744741.097272%

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 7824 6745 0 0 0.00% 0.00%
B 7824 6745 23 23 0.29% 0.34%
C 7824 6745 0 0 0.00% 0.00%
D 7824 6745 29 29 0.37% 0.43%

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 8 15 21257 121.84 820 800 167.9
A 15 234 21226 121.66 820 800 167.9
A 0 226 7944 42.55 820 800 167.9
B 11 51 195042 1230.88 824 805 157.8
B 4 239 130854 824.12 824 805 157.8
B 10 16 33244 205.57 824 805 157.8
C 1 16 13440 67.08 810 816 188.2
C 13 61 6205 28.64 810 816 188.2
C 14 67 2225 7.49 810 816 188.2
D 5 233 320355 1605.01 807 783 199.1
D 1 52 99918 497.89 807 783 199.1
D 7 55 40774 200.85 807 783 199.1

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