ASTROSAT CZTI

Data Quality Report

Orbit 25977

Creation date: 2024-06-27T19:23:27.742949
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_068T01_9000003760_25977cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25977cztM0_level2_quad_clean.evt
Size (bytes)1,880,023,680297,714,240
Size1.8 GB 283.9 MB
Events in quadrant A11,321,9801,908,690
Events in quadrant B11,451,1221,903,823
Events in quadrant C12,837,3771,806,154
Events in quadrant D19,693,3201,733,203

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0491190
B0493810
C0534680
D0748640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332
B0312
C0322
D0322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A240531770.735875%
B240462270.944024%
C240474391.825592%
D24044241110.027450%

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 32295 24222 0 0 0.00% 0.00%
B 32296 24199 5 5 0.02% 0.02%
C 32296 24209 52 52 0.16% 0.21%
D 32296 24189 1846 1846 5.72% 7.63%

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 13 254 37913 59.88 2930 2869 585.3
A 3 1 27464 42.02 2930 2869 585.3
A 3 137 27400 41.91 2930 2869 585.3
B 12 111 69330 121.29 2888 2816 548.4
B 11 111 62186 108.26 2888 2816 548.4
B 14 111 57264 99.29 2888 2816 548.4
C 3 233 1057926 1634.38 2769 2789 645.6
C 7 238 513173 790.57 2769 2789 645.6
C 14 238 447791 689.3 2769 2789 645.6
D 1 52 8417844 13123.92 2700 2635 641.2
D 7 80 817020 1270.07 2700 2635 641.2
D 12 233 145463 222.75 2700 2635 641.2

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