ASTROSAT CZTI

Data Quality Report

Orbit 30682

Creation date: 2024-06-27T20:18:33.751531
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/AS1A10_094T81_9000004426_30682cztM0_level2.evt modeM0/AS1A10_094T81_9000004426_30682cztM0_level2_quad_clean.evt
Size (bytes)720,325,440129,360,960
Size687.0 MB 123.4 MB
Events in quadrant A3,432,948904,197
Events in quadrant B5,265,255900,871
Events in quadrant C3,397,580868,655
Events in quadrant D9,266,255775,494

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144082
B0204182
C0140682
D0322792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6721901.339086%
B67211041.547389%
C67211081.606904%
D6721123418.360363%

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 7676 6722 35 35 0.46% 0.52%
B 7676 6722 1 1 0.01% 0.01%
C 7676 6722 9 9 0.12% 0.13%
D 7676 6722 1240 1240 16.15% 18.45%

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 0 13 245303 1491.4 820 803 163.9
A 8 192 22118 130.02 820 803 163.9
A 13 254 13446 77.12 820 803 163.9
B 6 159 1924965 12483.59 816 798 154.1
B 0 190 80492 517.04 816 798 154.1
B 12 111 19085 118.64 816 798 154.1
C 14 238 128856 700.59 792 798 182.8
C 3 233 95962 520.63 792 798 182.8
C 0 10 56026 302.15 792 798 182.8
D 8 195 4786411 26727.83 752 732 179.1
D 12 227 625963 3491.89 752 732 179.1
D 12 233 445084 2481.69 752 732 179.1

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