ASTROSAT CZTI

Data Quality Report

Orbit 01397

Creation date: 2024-06-27T14:12:05.070666
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/AS1G04_014T02_9000000232_01397cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01397cztM0_level2_quad_clean.evt
Size (bytes)1,241,452,80094,057,920
Size1.2 GB 89.7 MB
Events in quadrant A13,321,111556,821
Events in quadrant B8,557,667628,636
Events in quadrant C7,592,426612,926
Events in quadrant D7,695,800594,335

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0443792
B0300381
C0271841
D0275291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6518137321.064744%
B6518781.196686%
C6518170.260816%
D65182523.866217%

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 7148 6518 2912 2912 40.74% 44.68%
B 7148 6519 361 361 5.05% 5.54%
C 7148 6518 129 129 1.80% 1.98%
D 7148 6518 366 366 5.12% 5.62%

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 15 127 5438889 12303.95 1836 1849 441.9
A 4 32 671886 1516.29 1836 1849 441.9
A 15 233 65210 143.39 1836 1849 441.9
B 12 52 232299 477.74 2034 2045 482.0
B 5 191 166972 342.19 2034 2045 482.0
B 8 4 165288 338.7 2034 2045 482.0
C 15 241 224181 423.76 1871 1940 524.4
C 3 79 27312 48.38 1871 1940 524.4
C 3 111 23967 42.0 1871 1940 524.4
D 9 65 87564 144.3 1894 1900 593.6
D 9 53 57635 93.89 1894 1900 593.6
D 12 22 55653 90.55 1894 1900 593.6

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