ASTROSAT CZTI

Data Quality Report

Orbit 23455

Creation date: 2024-06-27T18:54:34.064216
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/AS1A07_100T02_9000003470_23455cztM0_level2.evt modeM0/AS1A07_100T02_9000003470_23455cztM0_level2_quad_clean.evt
Size (bytes)630,455,040103,887,360
Size601.2 MB 99.1 MB
Events in quadrant A3,294,011688,428
Events in quadrant B3,564,116694,271
Events in quadrant C3,426,416666,921
Events in quadrant D8,322,475596,658

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145751
B0151831
C0148111
D0296191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7179610.849701%
B7180721.002786%
C7180861.197772%
D7180184825.738162%

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 7599 7180 0 0 0.00% 0.00%
B 7600 7182 2 2 0.03% 0.03%
C 7600 7181 2 2 0.03% 0.03%
D 7600 7180 1694 1694 22.29% 23.59%

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 13 254 12477 67.18 853 832 173.3
A 0 226 7385 37.8 853 832 173.3
A 3 137 7020 35.7 853 832 173.3
B 0 190 120647 749.45 849 828 159.9
B 0 219 42054 257.86 849 828 159.9
B 0 229 32697 199.34 849 828 159.9
C 14 238 128279 666.19 814 816 191.3
C 3 233 45178 231.86 814 816 191.3
C 7 247 31194 158.77 814 816 191.3
D 1 52 3232631 18473.09 708 685 175.0
D 7 38 1035585 5915.26 708 685 175.0
D 12 233 665811 3801.71 708 685 175.0

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