ASTROSAT CZTI

Data Quality Report

Orbit 27564

Creation date: 2024-06-27T19:41:34.258926
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/AS1C05_019T04_9000003956_27564cztM0_level2.evt modeM0/AS1C05_019T04_9000003956_27564cztM0_level2_quad_clean.evt
Size (bytes)523,048,320118,411,200
Size498.8 MB 112.9 MB
Events in quadrant A4,180,024781,609
Events in quadrant B3,728,730802,857
Events in quadrant C3,360,788762,407
Events in quadrant D4,084,319740,327

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172700
B0156890
C0148110
D0170170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71603434.790503%
B71612443.407345%
C71612122.960480%
D71612753.840246%

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 7255 7161 123 123 1.70% 1.72%
B 7256 7161 24 24 0.33% 0.34%
C 7256 7162 0 0 0.00% 0.00%
D 7256 7162 79 79 1.09% 1.10%

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 15 174 828844 4725.53 865 845 175.2
A 6 16 14150 75.93 865 845 175.2
A 13 254 11690 61.89 865 845 175.2
B 10 245 302466 1828.17 856 835 165.0
B 3 64 38967 231.12 856 835 165.0
B 12 111 20522 119.32 856 835 165.0
C 14 238 134206 679.4 825 824 196.3
C 10 22 9754 45.49 825 824 196.3
C 13 61 5739 25.04 825 824 196.3
D 1 52 562394 2842.45 831 807 197.6
D 7 80 160864 810.12 831 807 197.6
D 12 227 90065 451.78 831 807 197.6

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