ASTROSAT CZTI

Data Quality Report

Orbit 48525

Creation date: 2024-09-17T20:36:39.526095
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/AS1A13_037T01_9000006436_48525cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48525cztM0_level2_quad_clean.evt
Size (bytes)534,672,000108,648,000
Size509.9 MB 103.6 MB
Events in quadrant A7,330,599723,189
Events in quadrant B3,418,439754,143
Events in quadrant C2,893,622714,111
Events in quadrant D5,601,395606,138

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02728322
B0152589
C01436014
D0218369

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01422
B01422
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70641842.604757%
B7066470.665157%
C706430.042469%
D70685437.682513%

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 7070 7069 79 79 1.12% 1.12%
B 7070 7070 20 20 0.28% 0.28%
C 7069 7069 0 0 0.00% 0.00%
D 7071 7071 596 596 8.43% 8.43%

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 10 83 3910660 24840.99 747 731 157.4
A 12 189 289723 1836.06 747 731 157.4
A 13 248 216643 1371.76 747 731 157.4
B 12 16 167171 1128.13 745 722 147.5
B 5 255 85309 573.3 745 722 147.5
B 5 171 50466 337.15 745 722 147.5
C 3 233 8186 42.59 738 741 174.8
C 13 61 4870 23.62 738 741 174.8
C 12 250 4161 19.56 738 741 174.8
D 2 165 2529831 13932.53 718 695 181.5
D 12 233 179325 984.04 718 695 181.5
D 2 249 111086 608.12 718 695 181.5

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