ASTROSAT CZTI

Data Quality Report

Orbit 23269

Creation date: 2024-06-27T18:52:05.788116
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/AS1A08_004T03_9000003438_23269cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23269cztM0_level2_quad_clean.evt
Size (bytes)1,279,235,520221,765,760
Size1.2 GB 211.5 MB
Events in quadrant A8,529,4271,398,222
Events in quadrant B8,813,9171,417,862
Events in quadrant C10,519,3981,305,719
Events in quadrant D9,645,4471,337,608

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371863
B0376683
C0425233
D0408554

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182491971.079511%
B182502411.320548%
C182509465.183562%
D182492141.172667%

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 20129 18250 0 0 0.00% 0.00%
B 20130 18250 7 7 0.03% 0.04%
C 20130 18250 539 539 2.68% 2.95%
D 20129 18250 58 58 0.29% 0.32%

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 6 16 27879 57.73 2206 2158 445.5
A 13 254 27327 56.49 2206 2158 445.5
A 3 137 19929 39.89 2206 2158 445.5
B 3 64 76143 176.14 2199 2143 420.1
B 12 111 52582 120.06 2199 2143 420.1
B 11 111 46789 106.27 2199 2143 420.1
C 10 9 1918015 3944.15 2076 2094 485.8
C 14 238 328420 671.78 2076 2094 485.8
C 0 207 134445 272.46 2076 2094 485.8
D 1 52 863988 1624.81 2152 2088 530.5
D 1 239 336933 631.23 2152 2088 530.5
D 7 238 191884 357.79 2152 2088 530.5

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