ASTROSAT CZTI

Data Quality Report

Orbit 19245

Creation date: 2024-06-27T18:00:34.540783
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/AS1C04_001T01_9000002846_19245cztM0_level2.evt modeM0/AS1C04_001T01_9000002846_19245cztM0_level2_quad_clean.evt
Size (bytes)1,136,214,720247,417,920
Size1.1 GB 236.0 MB
Events in quadrant A7,860,6271,585,495
Events in quadrant B8,182,8401,613,985
Events in quadrant C8,754,6081,555,278
Events in quadrant D8,428,3991,533,419

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352743
B0357363
C0361603
D0374013

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17491960.548854%
B174921350.771781%
C174921550.886119%
D174921871.069060%

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 19586 17494 0 0 0.00% 0.00%
B 19587 17494 21 21 0.11% 0.12%
C 19587 17495 4 4 0.02% 0.02%
D 19587 17495 107 107 0.55% 0.61%

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 24783 55.59 2038 1990 410.0
A 0 226 17539 37.92 2038 1990 410.0
A 3 137 16750 36.0 2038 1990 410.0
B 4 80 86891 220.47 2034 1979 385.1
B 3 64 56302 141.05 2034 1979 385.1
B 12 111 48097 119.75 2034 1979 385.1
C 3 233 760689 1666.79 1961 1975 455.2
C 14 238 304919 665.53 1961 1975 455.2
C 0 207 16246 31.35 1961 1975 455.2
D 5 222 421609 869.46 1986 1926 482.7
D 1 52 378243 779.62 1986 1926 482.7
D 2 234 76662 154.83 1986 1926 482.7

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