ASTROSAT CZTI

Data Quality Report

Orbit 10691

Creation date: 2024-06-27T16:02:30.660740
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/AS1A03_097T01_9000001540_10691cztM0_level2.evt modeM0/AS1A03_097T01_9000001540_10691cztM0_level2_quad_clean.evt
Size (bytes)474,220,80088,413,120
Size452.3 MB 84.3 MB
Events in quadrant A2,857,836576,992
Events in quadrant B3,583,572577,381
Events in quadrant C2,653,939571,847
Events in quadrant D4,859,871532,796

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124932
B0145481
C0121211
D0185991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5982701.170177%
B59821983.309930%
C5982430.718823%
D59822273.794717%

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 6922 5982 2 2 0.03% 0.03%
B 6922 5983 96 96 1.39% 1.60%
C 6922 5983 0 0 0.00% 0.00%
D 6922 5982 144 144 2.08% 2.41%

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 53044 365.49 701 686 143.3
A 14 254 38769 265.84 701 686 143.3
A 1 162 23472 159.06 701 686 143.3
B 4 239 640459 4761.87 698 681 134.4
B 15 204 53223 391.07 698 681 134.4
B 4 81 45911 336.65 698 681 134.4
C 13 61 5054 27.54 679 682 158.7
C 14 234 3801 19.65 679 682 158.7
C 14 67 1684 6.31 679 682 158.7
D 10 199 761192 4699.17 670 649 161.8
D 2 16 527712 3256.56 670 649 161.8
D 12 233 255636 1575.49 670 649 161.8

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