ASTROSAT CZTI

Data Quality Report

Orbit 35929

Creation date: 2022-06-09T02:36:07.801910
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/AS1A11_080T01_9000005146_35929cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35929cztM0_level2_quad_clean.evt
Size (bytes)1,779,788,160212,803,200
Size1.7 GB 202.9 MB
Events in quadrant A11,310,2451,356,156
Events in quadrant B12,150,9001,349,286
Events in quadrant C9,987,1311,311,116
Events in quadrant D19,258,5661,204,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440555
B0466884
C0394314
D0685544

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177473171.786217%
B1774711536.496873%
C177472541.431228%
D17747378321.316279%

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 25938 17751 211 211 0.81% 1.19%
B 25938 17751 794 794 3.06% 4.47%
C 25938 17751 198 198 0.76% 1.12%
D 25938 17751 3554 3554 13.70% 20.02%

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 15 169 1932547 4336.35 2251 2219 445.1
A 10 83 435303 972.89 2251 2219 445.1
A 9 143 188175 417.74 2251 2219 445.1
B 5 172 3199146 8042.64 2149 2104 397.5
B 5 255 250715 625.42 2149 2104 397.5
B 0 213 85903 210.81 2149 2104 397.5
C 0 10 793891 1628.73 2132 2153 486.1
C 15 214 733633 1504.77 2132 2153 486.1
C 0 207 144498 292.83 2132 2153 486.1
D 8 230 8800165 18445.69 1964 1915 477.0
D 8 195 635317 1327.94 1964 1915 477.0
D 13 249 548554 1146.04 1964 1915 477.0

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