ASTROSAT CZTI

Data Quality Report

Orbit 17741

Creation date: 2024-06-27T17:40:18.363713
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_070T03_9000002636_17741cztM0_level2.evt modeM0/AS1T03_070T03_9000002636_17741cztM0_level2_quad_clean.evt
Size (bytes)461,272,32094,230,720
Size439.9 MB 89.9 MB
Events in quadrant A3,131,726614,959
Events in quadrant B3,791,905595,151
Events in quadrant C3,266,503591,252
Events in quadrant D3,326,659587,722

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137852
B0157852
C0139332
D0145662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6661400.600510%
B66613014.518841%
C6661801.201021%
D6661841.261072%

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 7736 6662 0 0 0.00% 0.00%
B 7736 6662 207 207 2.68% 3.11%
C 7736 6662 0 0 0.00% 0.00%
D 7736 6662 29 29 0.37% 0.44%

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 15 191 44687 270.54 802 784 162.3
A 0 226 7213 39.62 802 784 162.3
A 3 137 5990 32.08 802 784 162.3
B 4 142 537282 3573.65 782 760 150.1
B 10 245 100403 663.7 782 760 150.1
B 0 197 47185 309.23 782 760 150.1
C 14 238 119440 657.31 775 780 180.5
C 5 218 66015 361.36 775 780 180.5
C 3 233 37443 203.09 775 780 180.5
D 1 52 245249 1193.99 779 761 204.8
D 2 234 29513 140.41 779 761 204.8
D 7 238 22601 106.66 779 761 204.8

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