ASTROSAT CZTI

Data Quality Report

Orbit 24369

Creation date: 2024-06-27T19:05:15.782960
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_145T01_9000003594_24369cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24369cztM0_level2_quad_clean.evt
Size (bytes)1,658,491,200216,267,840
Size1.5 GB 206.2 MB
Events in quadrant A8,633,3071,335,548
Events in quadrant B8,887,0721,367,939
Events in quadrant C10,628,4061,313,369
Events in quadrant D20,828,8691,256,367

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376843
B0381113
C0433643
D0743263

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185292021.090183%
B185282321.252159%
C185283121.683938%
D18529491026.499002%

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 20259 18532 0 0 0.00% 0.00%
B 20258 18531 11 11 0.05% 0.06%
C 20258 18531 0 0 0.00% 0.00%
D 20259 18532 4441 4441 21.92% 23.96%

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 13 254 26190 53.39 2237 2187 449.6
A 3 137 21041 41.93 2237 2187 449.6
A 0 226 19073 37.56 2237 2187 449.6
B 0 230 60434 135.65 2231 2174 429.5
B 0 190 54415 121.64 2231 2174 429.5
B 12 111 53540 119.6 2231 2174 429.5
C 7 247 1858333 3722.07 2145 2159 498.7
C 14 238 342339 682.14 2145 2159 498.7
C 2 16 54971 105.9 2145 2159 498.7
D 9 35 9734800 19866.52 1990 1922 489.9
D 7 238 1100368 2242.12 1990 1922 489.9
D 8 195 952108 1939.5 1990 1922 489.9

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