ASTROSAT CZTI

Data Quality Report

Orbit 33827

Creation date: 2024-06-27T20:53:07.325186
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/AS1A11_106T03_9000004826_33827cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33827cztM0_level2_quad_clean.evt
Size (bytes)2,633,495,040327,816,000
Size2.5 GB 312.6 MB
Events in quadrant A15,381,6482,043,289
Events in quadrant B18,455,8842,032,111
Events in quadrant C17,194,8792,042,232
Events in quadrant D26,834,6601,878,060

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0990
B0990
C0990
D0990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05740
B05740
C05740
D05740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0634527
B0729816
C0687006
D0995646

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A281028052.864565%
B2810215765.608142%
C281023051.085332%
D2810216685.935521%

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 37990 28108 743 743 1.96% 2.64%
B 37990 28107 1047 1047 2.76% 3.73%
C 37990 28108 250 250 0.66% 0.89%
D 37990 28108 1429 1429 3.76% 5.08%

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 15 169 2431652 3714.41 3320 3261 653.8
A 13 6 77659 113.8 3320 3261 653.8
A 13 254 46922 66.78 3320 3261 653.8
B 5 172 3894456 6314.37 3258 3173 616.3
B 5 255 986826 1596.17 3258 3173 616.3
B 0 213 168378 268.08 3258 3173 616.3
C 3 233 1551635 2106.65 3242 3268 735.0
C 15 214 1205191 1635.29 3242 3268 735.0
C 14 254 888410 1204.29 3242 3268 735.0
D 8 195 6038448 7652.49 3217 3125 788.7
D 12 235 2221610 2812.93 3217 3125 788.7
D 1 47 1593740 2016.82 3217 3125 788.7

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