ASTROSAT CZTI

Data Quality Report

Orbit 11704

Creation date: 2024-06-27T16:17:08.270241
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/AS1A04_227T01_9000001724_11704cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11704cztM0_level2_quad_clean.evt
Size (bytes)915,707,52084,055,680
Size873.3 MB 80.2 MB
Events in quadrant A6,393,222528,753
Events in quadrant B4,260,573560,985
Events in quadrant C3,019,133572,326
Events in quadrant D13,608,105415,308

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236143
B0169652
C0135412
D0449722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A668270410.535768%
B66822764.130500%
C6682180.269380%
D6682459768.796767%

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 7633 6684 425 425 5.57% 6.36%
B 7633 6684 136 136 1.78% 2.03%
C 7633 6684 0 0 0.00% 0.00%
D 7633 6684 3922 3922 51.38% 58.68%

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 5 2905985 18547.94 765 748 156.6
A 1 162 136378 865.9 765 748 156.6
A 15 174 84697 535.96 765 748 156.6
B 4 239 567185 3777.11 778 759 150.0
B 3 64 397219 2643.72 778 759 150.0
B 15 204 66538 438.64 778 759 150.0
C 13 61 5625 26.94 773 778 179.9
C 8 222 3609 15.74 773 778 179.9
C 14 234 2157 7.66 773 778 179.9
D 13 152 10397198 72867.18 588 571 142.7
D 13 104 353369 2472.67 588 571 142.7
D 10 157 326980 2287.71 588 571 142.7

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