ASTROSAT CZTI

Data Quality Report

Orbit 28838

Creation date: 2024-06-27T19:57:01.787430
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/AS1A10_121T01_9000004134_28838cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28838cztM0_level2_quad_clean.evt
Size (bytes)715,659,840108,469,440
Size682.5 MB 103.4 MB
Events in quadrant A3,631,049715,137
Events in quadrant B3,709,454734,916
Events in quadrant C7,743,591660,864
Events in quadrant D6,103,115672,295

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152621
B0156251
C0282221
D0231291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71962803.891051%
B71973454.793664%
C7197128217.812978%
D71975257.294706%

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 7341 7196 0 0 0.00% 0.00%
B 7342 7197 47 47 0.64% 0.65%
C 7342 7197 423 423 5.76% 5.88%
D 7342 7197 286 286 3.90% 3.97%

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 147740 831.89 875 854 176.6
A 14 235 101051 567.47 875 854 176.6
A 13 254 13267 70.3 875 854 176.6
B 5 255 121631 726.88 870 846 166.2
B 5 172 93461 557.35 870 846 166.2
B 10 245 32793 192.26 870 846 166.2
C 3 233 4217630 22013.4 818 824 191.6
C 14 238 209102 1087.29 818 824 191.6
C 14 254 118011 611.76 818 824 191.6
D 8 195 1009672 5000.33 853 828 201.8
D 1 52 722138 3575.17 853 828 201.8
D 13 104 611768 3028.12 853 828 201.8

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