ASTROSAT CZTI

Data Quality Report

Orbit 22329

Creation date: 2024-06-27T18:39:30.584656
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/AS1A07_149T01_9000003304_22329cztM0_level2.evt modeM0/AS1A07_149T01_9000003304_22329cztM0_level2_quad_clean.evt
Size (bytes)1,147,296,960269,700,480
Size1.1 GB 257.2 MB
Events in quadrant A8,128,0381,768,028
Events in quadrant B8,402,4541,800,753
Events in quadrant C8,092,2891,708,096
Events in quadrant D8,933,6591,680,666

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360873
B0367373
C0357773
D0389973

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175771330.756671%
B175781480.841962%
C175781650.938673%
D175781560.887473%

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 19977 17578 36 36 0.18% 0.20%
B 19978 17579 14 14 0.07% 0.08%
C 19978 17580 0 0 0.00% 0.00%
D 19978 17581 110 110 0.55% 0.63%

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 4 2 144356 344.05 2065 2022 413.7
A 13 254 23408 51.69 2065 2022 413.7
A 3 1 18552 39.96 2065 2022 413.7
B 6 36 198323 506.25 2065 2012 387.8
B 12 111 47834 118.17 2065 2012 387.8
B 11 111 42790 105.16 2065 2012 387.8
C 14 238 311061 671.26 1981 1992 460.4
C 0 10 18293 35.4 1981 1992 460.4
C 8 128 14449 27.05 1981 1992 460.4
D 1 52 992848 2048.33 2001 1943 483.8
D 13 174 215907 442.29 2001 1943 483.8
D 2 234 69780 140.23 2001 1943 483.8

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