ASTROSAT CZTI

Data Quality Report

Orbit 26859

Creation date: 2024-06-27T19:33:44.475257
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_224T01_9000003868_26859cztM0_level2.evt modeM0/AS1T03_224T01_9000003868_26859cztM0_level2_quad_clean.evt
Size (bytes)1,756,915,200225,262,080
Size1.6 GB 214.8 MB
Events in quadrant A10,007,5251,456,951
Events in quadrant B19,983,7781,310,385
Events in quadrant C8,472,8261,446,336
Events in quadrant D13,526,1691,360,330

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416710
B0716750
C0370570
D0522580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180863501.935198%
B18087390221.573506%
C180861700.939954%
D180869815.424085%

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 19936 18089 204 204 1.02% 1.13%
B 19937 18089 3028 3028 15.19% 16.74%
C 19936 18089 0 0 0.00% 0.00%
D 19936 18089 863 863 4.33% 4.77%

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 1630542 3715.22 2169 2125 438.3
A 13 254 31052 66.0 2169 2125 438.3
A 3 137 20719 42.42 2169 2125 438.3
B 0 189 10741740 28075.05 2025 1980 382.5
B 3 64 703807 1834.66 2025 1980 382.5
B 10 246 500155 1302.29 2025 1980 382.5
C 14 238 333457 677.95 2088 2099 488.8
C 13 61 14465 25.3 2088 2099 488.8
C 3 233 8870 13.85 2088 2099 488.8
D 7 80 3641930 7531.41 2058 2010 483.3
D 1 52 1267228 2617.88 2058 2010 483.3
D 2 250 548375 1130.49 2058 2010 483.3

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