ASTROSAT CZTI

Data Quality Report

Orbit 00557

Creation date: 2024-06-27T13:59:44.694954
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/AS1P01_015T03_9000000076_00557cztM0_level2.evt modeM0/AS1P01_015T03_9000000076_00557cztM0_level2_quad_clean.evt
Size (bytes)537,785,28044,118,720
Size512.9 MB 42.1 MB
Events in quadrant A3,654,816285,755
Events in quadrant B3,672,847287,239
Events in quadrant C3,633,547284,899
Events in quadrant D5,127,431265,785

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174414454
B0175824562
C0171144182
D0238256575

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272
B0283
C0272
D0272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08519
B08325
C08218
D08521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A298530.100503%
B297650.168011%
C298440.134048%
D2917612.091190%

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 7274 3078 64 64 0.88% 2.08%
B 7274 3075 53 53 0.73% 1.72%
C 7274 3083 55 55 0.76% 1.78%
D 7274 3020 624 624 8.58% 20.66%

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 0 238 26883 126.71 926 912 205.0
A 13 160 19221 89.33 926 912 205.0
A 15 53 10352 46.06 926 912 205.0
B 8 4 36164 161.42 925 926 218.3
B 4 206 24892 109.78 925 926 218.3
B 5 46 21705 95.18 925 926 218.3
C 1 1 81209 319.59 891 926 251.2
C 7 222 28138 108.32 891 926 251.2
C 15 241 8146 28.74 891 926 251.2
D 1 239 1181447 4487.01 841 872 263.1
D 13 221 208237 788.13 841 872 263.1
D 1 4 129420 488.57 841 872 263.1

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