ASTROSAT CZTI

Data Quality Report

Orbit 19660

Creation date: 2024-06-27T18:05:20.845569
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/AS1T03_005T01_9000002928_19660cztM0_level2.evt modeM0/AS1T03_005T01_9000002928_19660cztM0_level2_quad_clean.evt
Size (bytes)516,597,12087,647,040
Size492.7 MB 83.6 MB
Events in quadrant A3,781,920539,165
Events in quadrant B3,818,041545,980
Events in quadrant C3,749,679516,294
Events in quadrant D3,764,585509,653

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163363
B0163363
C0161953
D0165893

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78102563.277849%
B78102993.828425%
C78102883.687580%
D78102082.663252%

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 7975 7810 3 3 0.04% 0.04%
B 7975 7810 10 10 0.13% 0.13%
C 7975 7811 0 0 0.00% 0.00%
D 7975 7811 7 7 0.09% 0.09%

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 13 252 61438 311.64 958 938 194.1
A 11 29 20989 103.28 958 938 194.1
A 9 143 11400 53.89 958 938 194.1
B 7 220 41929 222.83 952 926 184.0
B 12 111 22932 119.59 952 926 184.0
B 0 198 21143 109.87 952 926 184.0
C 14 238 143363 665.26 914 919 214.1
C 3 233 33685 153.03 914 919 214.1
C 9 221 9631 40.69 914 919 214.1
D 1 52 154765 676.99 929 899 227.3
D 13 104 47406 204.62 929 899 227.3
D 2 234 28941 123.38 929 899 227.3

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