ASTROSAT CZTI

Data Quality Report

Orbit 04960

Creation date: 2024-06-27T14:49:24.093028
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/AS1G05_140T01_9000000628_04960cztM0_level2.evt modeM0/AS1G05_140T01_9000000628_04960cztM0_level2_quad_clean.evt
Size (bytes)442,244,16077,567,040
Size421.8 MB 74.0 MB
Events in quadrant A3,133,663474,422
Events in quadrant B3,156,298477,029
Events in quadrant C2,989,237480,737
Events in quadrant D3,665,134455,962

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137443
B0136792
C0134732
D0153192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6606731.105056%
B6606640.968816%
C6606610.923403%
D66061041.574326%

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 7666 6606 5 5 0.07% 0.08%
B 7666 6606 0 0 0.00% 0.00%
C 7666 6606 0 0 0.00% 0.00%
D 7666 6606 68 68 0.89% 1.03%

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 13 251 61563 381.6 783 766 159.3
A 0 31 32279 197.79 783 766 159.3
A 15 234 13531 80.12 783 766 159.3
B 10 249 28578 183.56 789 770 151.5
B 15 204 25548 163.56 789 770 151.5
B 0 183 17696 111.73 789 770 151.5
C 13 61 6242 31.07 765 768 176.2
C 3 202 1928 6.58 765 768 176.2
C 7 247 1887 6.35 765 768 176.2
D 2 33 185232 991.99 760 736 186.0
D 7 67 138170 738.95 760 736 186.0
D 12 233 93293 497.65 760 736 186.0

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