ASTROSAT CZTI

Data Quality Report

Orbit 14942

Creation date: 2024-06-27T17:01:36.952146
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/AS1T02_052T01_9000002208_14942cztM0_level2.evt modeM0/AS1T02_052T01_9000002208_14942cztM0_level2_quad_clean.evt
Size (bytes)606,222,72098,951,040
Size578.1 MB 94.4 MB
Events in quadrant A3,489,126647,010
Events in quadrant B5,006,798627,254
Events in quadrant C4,411,466611,087
Events in quadrant D4,965,104610,596

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150452
B0195611
C0175271
D0197271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71891341.863959%
B71894376.078731%
C71893154.381694%
D71891632.267353%

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 7420 7192 4 4 0.05% 0.06%
B 7420 7192 173 173 2.33% 2.41%
C 7420 7192 168 168 2.26% 2.34%
D 7420 7192 40 40 0.54% 0.56%

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 15 69 22876 121.07 891 871 181.7
A 12 189 21113 111.37 891 871 181.7
A 4 2 12573 64.38 891 871 181.7
B 10 16 1364249 8171.69 856 834 166.8
B 0 189 144435 860.68 856 834 166.8
B 0 219 71075 420.99 856 834 166.8
C 9 236 908465 4549.18 848 853 199.5
C 3 233 191000 953.06 848 853 199.5
C 7 247 6758 29.6 848 853 199.5
D 7 254 1505019 7294.1 861 841 206.2
D 13 249 67015 320.89 861 841 206.2
D 10 70 42082 199.99 861 841 206.2

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