ASTROSAT CZTI

Data Quality Report

Orbit 12297

Creation date: 2024-06-27T16:25:05.949958
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/AS1A04_183T02_9000001816_12297cztM0_level2.evt modeM0/AS1A04_183T02_9000001816_12297cztM0_level2_quad_clean.evt
Size (bytes)1,451,638,080225,887,040
Size1.4 GB 215.4 MB
Events in quadrant A11,119,6371,386,343
Events in quadrant B10,374,7751,411,384
Events in quadrant C8,428,6471,432,333
Events in quadrant D12,797,2481,341,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450695
B0428184
C0379884
D0502754

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184196503.528965%
B184195462.964330%
C184191080.586351%
D184197494.066453%

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 20800 18424 376 376 1.81% 2.04%
B 20800 18424 207 207 1.00% 1.12%
C 20800 18424 22 22 0.11% 0.12%
D 20800 18424 603 603 2.90% 3.27%

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 23 1627146 3706.0 2148 2109 438.5
A 1 162 305064 690.91 2148 2109 438.5
A 1 178 162101 364.87 2148 2109 438.5
B 4 239 984951 2401.68 2150 2099 409.2
B 3 64 288188 699.08 2150 2099 409.2
B 0 85 226812 549.1 2150 2099 409.2
C 14 234 172257 347.69 2108 2122 489.3
C 15 208 28939 54.8 2108 2122 489.3
C 13 61 15139 26.6 2108 2122 489.3
D 1 52 1970492 3923.3 2077 2018 501.7
D 5 222 1876467 3735.9 2077 2018 501.7
D 9 85 245899 486.07 2077 2018 501.7

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