ASTROSAT CZTI

Data Quality Report

Orbit 15159

Creation date: 2024-06-27T17:04:35.071739
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_218T08_9000002236_15159cztM0_level2.evt modeM0/AS1A04_218T08_9000002236_15159cztM0_level2_quad_clean.evt
Size (bytes)539,565,12097,508,160
Size514.6 MB 93.0 MB
Events in quadrant A4,022,598601,373
Events in quadrant B3,893,522611,124
Events in quadrant C4,042,850616,159
Events in quadrant D3,853,074582,610

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170363
B0167002
C0166442
D0169592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77902573.299101%
B77902933.761232%
C77902202.824134%
D77902723.491656%

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 7836 7790 1 1 0.01% 0.01%
B 7836 7789 28 28 0.36% 0.36%
C 7836 7790 9 9 0.11% 0.12%
D 7836 7790 59 59 0.75% 0.76%

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 15 239 368347 1935.06 937 913 189.9
A 13 248 22095 111.55 937 913 189.9
A 12 189 21799 109.99 937 913 189.9
B 0 229 92151 500.45 937 908 182.3
B 3 64 89773 487.4 937 908 182.3
B 12 111 21848 114.85 937 908 182.3
C 3 233 369179 1717.52 926 930 214.4
C 14 234 42607 194.38 926 930 214.4
C 9 236 20501 91.28 926 930 214.4
D 2 16 135542 598.21 922 892 225.1
D 1 255 125982 555.73 922 892 225.1
D 7 38 32724 141.42 922 892 225.1

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