ASTROSAT CZTI

Data Quality Report

Orbit 18701

Creation date: 2024-06-27T17:53:35.817557
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_072T04_9000002794_18701cztM0_level2.evt modeM0/AS1A05_072T04_9000002794_18701cztM0_level2_quad_clean.evt
Size (bytes)252,362,88015,822,720
Size240.7 MB 15.1 MB
Events in quadrant A1,858,37876,025
Events in quadrant B1,448,58776,414
Events in quadrant C1,400,49973,412
Events in quadrant D2,760,00668,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071610
B058600
C056520
D0100350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25661325.144193%
B2567140.545384%
C2567120.467472%
D256732712.738605%

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 2566 2566 72 72 2.81% 2.81%
B 2567 2567 3 3 0.12% 0.12%
C 2567 2567 0 0 0.00% 0.00%
D 2567 2567 302 302 11.76% 11.76%

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 0 13 401859 5615.83 352 345 71.5
A 9 143 93695 1305.65 352 345 71.5
A 13 254 3965 50.63 352 345 71.5
B 7 220 36955 550.54 352 346 66.5
B 0 197 13805 202.4 352 346 66.5
B 4 216 12834 187.8 352 346 66.5
C 14 238 56571 708.95 341 345 79.3
C 3 233 6598 78.84 341 345 79.3
C 0 207 3942 45.35 341 345 79.3
D 1 52 1283239 15408.66 339 330 83.3
D 7 238 186151 2231.84 339 330 83.3
D 2 234 11103 129.39 339 330 83.3

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