ASTROSAT CZTI

Data Quality Report

Orbit 33177

Creation date: 2024-06-27T20:45:45.375636
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_080T02_9000004768_33177cztM0_level2.evt modeM0/AS1A11_080T02_9000004768_33177cztM0_level2_quad_clean.evt
Size (bytes)467,311,68059,379,840
Size445.7 MB 56.6 MB
Events in quadrant A2,544,250371,202
Events in quadrant B3,563,466367,944
Events in quadrant C2,727,701367,426
Events in quadrant D4,985,618347,817

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102103
B0137442
C0107642
D0184392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489270.143091%
B48922004.088307%
C4892661.349141%
D48923216.561733%

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 7014 4893 0 0 0.00% 0.00%
B 7014 4893 122 122 1.74% 2.49%
C 7014 4893 52 52 0.74% 1.06%
D 7014 4893 294 294 4.19% 6.01%

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 6 12425 90.61 655 643 130.0
A 13 254 8758 62.41 655 643 130.0
A 0 226 5606 38.17 655 643 130.0
B 5 172 559896 4657.54 637 623 120.1
B 0 219 322944 2684.24 637 623 120.1
B 0 190 47415 389.68 637 623 120.1
C 0 10 195940 1351.15 634 641 144.5
C 14 67 24846 167.46 634 641 144.5
C 9 187 10005 64.78 634 641 144.5
D 12 218 1023393 6440.84 623 609 158.8
D 8 195 880946 5543.8 623 609 158.8
D 10 203 199512 1252.56 623 609 158.8

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