ASTROSAT CZTI

Data Quality Report

Orbit 18785

Creation date: 2024-06-27T17:54:40.668806
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/AS1A05_024T01_9000002810_18785cztM0_level2.evt modeM0/AS1A05_024T01_9000002810_18785cztM0_level2_quad_clean.evt
Size (bytes)428,425,92089,732,160
Size408.6 MB 85.6 MB
Events in quadrant A3,199,840576,283
Events in quadrant B3,121,149591,444
Events in quadrant C3,153,297568,112
Events in quadrant D3,083,736553,438

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133161
B0129621
C0131471
D0130041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6128911.484987%
B6128540.881201%
C61271051.713726%
D6127450.734454%

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 7253 6129 38 38 0.52% 0.62%
B 7253 6129 1 1 0.01% 0.02%
C 7252 6128 14 14 0.19% 0.23%
D 7252 6128 2 2 0.03% 0.03%

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 6 16 191225 1226.99 776 761 155.2
A 11 29 10969 65.76 776 761 155.2
A 13 254 9609 57.0 776 761 155.2
B 10 245 44657 298.48 775 754 147.1
B 12 111 17104 111.16 775 754 147.1
B 11 111 15128 97.72 775 754 147.1
C 14 238 119556 668.31 759 764 177.7
C 6 96 39151 215.96 759 764 177.7
C 9 54 19868 107.48 759 764 177.7
D 12 110 157644 839.36 767 745 186.9
D 2 234 24871 129.07 767 745 186.9
D 13 104 9515 46.92 767 745 186.9

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