ASTROSAT CZTI

Data Quality Report

Orbit 23527

Creation date: 2024-06-27T18:55:44.735536
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_011T01_9000003482_23527cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23527cztM0_level2_quad_clean.evt
Size (bytes)531,904,32084,807,360
Size507.3 MB 80.9 MB
Events in quadrant A3,550,588517,790
Events in quadrant B4,036,958522,855
Events in quadrant C3,725,416503,193
Events in quadrant D4,281,662497,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154982
B0168592
C0158372
D0177302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7575610.805281%
B75751061.399340%
C75741131.491946%
D75741111.465540%

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 7950 7575 1 1 0.01% 0.01%
B 7950 7576 22 22 0.28% 0.29%
C 7949 7574 10 10 0.13% 0.13%
D 7949 7574 62 62 0.78% 0.82%

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 13433 67.63 917 896 185.4
A 10 253 13223 66.5 917 896 185.4
A 0 226 8066 38.68 917 896 185.4
B 0 189 293990 1692.28 906 881 173.2
B 0 228 60160 342.25 906 881 173.2
B 15 32 40983 231.53 906 881 173.2
C 14 238 139207 676.99 873 875 204.3
C 0 207 60355 291.09 873 875 204.3
C 10 9 56677 273.09 873 875 204.3
D 1 52 601854 2764.77 891 864 217.4
D 9 85 90345 411.64 891 864 217.4
D 12 233 59417 269.36 891 864 217.4

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