ASTROSAT CZTI

Data Quality Report

Orbit 17263

Creation date: 2024-06-27T17:34:14.923229
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/AS1T03_059T01_9000002554_17263cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17263cztM0_level2_quad_clean.evt
Size (bytes)1,232,827,200230,400,000
Size1.1 GB 219.7 MB
Events in quadrant A8,890,7371,456,099
Events in quadrant B8,817,8181,463,795
Events in quadrant C8,837,4581,392,889
Events in quadrant D9,533,5931,385,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387295
B0385074
C0387314
D0415994

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185822401.291572%
B185823031.630610%
C185823641.958885%
D185824712.534711%

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 33370 18586 1 1 0.00% 0.01%
B 33370 18586 3 3 0.01% 0.02%
C 33370 18585 0 0 0.00% 0.00%
D 33370 18586 219 219 0.66% 1.18%

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 23 239716 528.4 2243 2196 449.5
A 0 226 33527 69.7 2243 2196 449.5
A 0 13 17145 33.26 2243 2196 449.5
B 0 230 56462 126.11 2236 2176 430.5
B 12 111 52940 117.93 2236 2176 430.5
B 11 111 46178 102.22 2236 2176 430.5
C 14 238 327431 648.48 2142 2154 501.6
C 3 233 156203 307.12 2142 2154 501.6
C 13 61 14922 25.45 2142 2154 501.6
D 1 52 503994 955.65 2170 2106 525.2
D 11 176 321193 607.58 2170 2106 525.2
D 13 189 202257 381.11 2170 2106 525.2

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