ASTROSAT CZTI

Data Quality Report

Orbit 18804

Creation date: 2024-06-27T17:54:54.505365
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_024T01_9000002810_18804cztM0_level2.evt modeM0/AS1A05_024T01_9000002810_18804cztM0_level2_quad_clean.evt
Size (bytes)499,466,88076,570,560
Size476.3 MB 73.0 MB
Events in quadrant A3,427,058471,357
Events in quadrant B3,541,911476,467
Events in quadrant C3,496,452454,749
Events in quadrant D4,203,930447,113

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142462
B0145022
C0144972
D0168512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67291321.961658%
B67291372.035964%
C67291352.006242%
D67294676.940110%

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 7789 6730 0 0 0.00% 0.00%
B 7789 6730 1 1 0.01% 0.01%
C 7789 6730 0 0 0.00% 0.00%
D 7789 6730 243 243 3.12% 3.61%

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 11 29 13135 69.41 883 865 176.8
A 13 254 11389 59.53 883 865 176.8
A 0 226 7839 39.45 883 865 176.8
B 6 36 45935 274.52 876 856 164.2
B 12 111 19268 112.13 876 856 164.2
B 7 220 17581 101.85 876 856 164.2
C 14 238 131265 666.63 843 850 195.6
C 3 233 77393 391.26 843 850 195.6
C 13 61 6023 26.44 843 850 195.6
D 1 52 891591 4371.98 846 823 203.7
D 7 223 58305 282.13 846 823 203.7
D 7 238 34064 163.15 846 823 203.7

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