ASTROSAT CZTI

Data Quality Report

Orbit 27356

Creation date: 2024-06-27T19:39:14.718088
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/AS1A09_038T11_9000003924_27356cztM0_level2.evt modeM0/AS1A09_038T11_9000003924_27356cztM0_level2_quad_clean.evt
Size (bytes)464,379,84077,679,360
Size442.9 MB 74.1 MB
Events in quadrant A1,910,989577,541
Events in quadrant B1,948,875591,193
Events in quadrant C5,324,443394,763
Events in quadrant D4,615,841513,865

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079080
B079530
C0183900
D0164350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A387540.103226%
B387660.154799%
C3876161141.563467%
D387692223.787410%

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 3875 3875 0 0 0.00% 0.00%
B 3876 3876 0 0 0.00% 0.00%
C 3875 3875 1188 1188 30.66% 30.66%
D 3876 3876 869 869 22.42% 22.42%

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 6612 61.96 495 487 98.8
A 0 226 4237 37.93 495 487 98.8
A 3 137 4181 37.37 495 487 98.8
B 15 32 13547 144.88 489 477 90.2
B 12 111 10214 107.93 489 477 90.2
B 11 111 9244 97.18 489 477 90.2
C 2 16 3890310 49227.7 343 346 79.0
C 14 238 56147 706.16 343 346 79.0
C 15 208 35251 441.72 343 346 79.0
D 1 52 2782974 25331.52 450 439 109.8
D 2 250 101928 923.93 450 439 109.8
D 2 234 15806 139.89 450 439 109.8

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