ASTROSAT CZTI

Data Quality Report

Orbit 08562

Creation date: 2024-06-27T15:34:17.679741
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/AS1G07_060T01_9000001200_08562cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08562cztM0_level2_quad_clean.evt
Size (bytes)1,275,284,160231,909,120
Size1.2 GB 221.2 MB
Events in quadrant A9,426,4631,442,810
Events in quadrant B9,103,7831,457,596
Events in quadrant C8,393,9801,438,478
Events in quadrant D10,420,4861,384,574

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04102113
B03983314
C03853910
D04418515

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188655612.973761%
B188644542.406701%
C188662901.537157%
D188657153.790087%

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 20524 18869 137 137 0.67% 0.73%
B 20524 18869 80 80 0.39% 0.42%
C 20524 18869 1 1 0.00% 0.01%
D 20524 18869 374 374 1.82% 1.98%

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 15 223 653076 1463.86 2187 2133 444.7
A 15 239 273646 610.59 2187 2133 444.7
A 15 255 38308 81.35 2187 2133 444.7
B 10 16 325201 759.68 2200 2140 425.3
B 0 214 115720 267.08 2200 2140 425.3
B 11 51 52177 117.66 2200 2140 425.3
C 9 54 29154 54.39 2143 2146 496.6
C 13 61 16217 28.34 2143 2146 496.6
C 8 222 11632 19.1 2143 2146 496.6
D 1 52 1833061 3566.68 2099 2044 513.4
D 14 34 199767 385.15 2099 2044 513.4
D 12 233 114096 218.27 2099 2044 513.4

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