ASTROSAT CZTI

Data Quality Report

Orbit 13991

Creation date: 2024-06-27T16:48:47.438144
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_122T01_9000002064_13991cztM0_level2.evt modeM0/AS1A04_122T01_9000002064_13991cztM0_level2_quad_clean.evt
Size (bytes)1,321,885,440225,138,240
Size1.2 GB 214.7 MB
Events in quadrant A9,247,5611,381,211
Events in quadrant B9,624,4681,480,370
Events in quadrant C9,039,0801,351,082
Events in quadrant D10,822,3181,280,994

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0399033
B0404603
C0391403
D0444153

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192322791.450707%
B192322871.492304%
C192321680.873544%
D192323201.663894%

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 20943 19237 18 18 0.09% 0.09%
B 20943 19236 26 26 0.12% 0.14%
C 20943 19237 3 3 0.01% 0.02%
D 20943 19237 130 130 0.62% 0.68%

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 8 15 226913 484.1 2281 2231 464.1
A 14 111 107805 227.47 2281 2231 464.1
A 1 162 59960 124.38 2281 2231 464.1
B 0 189 143236 324.0 2304 2254 435.1
B 4 80 105312 236.84 2304 2254 435.1
B 3 209 77682 173.35 2304 2254 435.1
C 3 233 387148 751.28 2217 2225 512.4
C 13 61 15844 26.58 2217 2225 512.4
C 14 234 13680 22.36 2217 2225 512.4
D 8 195 429869 820.9 2191 2136 521.1
D 13 189 419306 800.63 2191 2136 521.1
D 1 52 413907 790.26 2191 2136 521.1

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