ASTROSAT CZTI

Data Quality Report

Orbit 20160304_T01_030T01_9000000358_level2

Creation date: 2025-10-28T00:53:49.368699
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/AS1T01_030T01_9000000358cztM0_level2.fits modeM0/AS1T01_030T01_9000000358cztM0_level2_quad_clean.evt
Size (bytes)1,385,055,3601,486,848,960
Size1.3 GB 1.4 GB
Events in quadrant A8,343,9429,022,693
Events in quadrant B8,101,3049,181,568
Events in quadrant C8,159,3188,639,544
Events in quadrant D6,994,7287,844,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03302240
B03207980
C03203450
D03336690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030680
B030680
C030680
D030680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15099127911.848455%
B15099325371.680210%
C15099319261.275556%
D15099227351.811354%

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 183940 150993 0 0 0.00% 0.00%
B 183940 150991 0 0 0.00% 0.00%
C 183939 150989 0 0 0.00% 0.00%
D 183939 150983 0 0 0.00% 0.00%

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 14 188 8043 10.78 2165 2014 559.1
A 0 29 7827 10.4 2165 2014 559.1
A 7 110 7153 9.19 2165 2014 559.1
B 2 9 7091 12.35 2131 2026 410.0
B 12 226 6201 10.18 2131 2026 410.0
B 14 254 5824 9.26 2131 2026 410.0
C 2 191 5476 6.05 2163 1990 576.6
C 9 242 5424 5.96 2163 1990 576.6
C 1 80 5416 5.94 2163 1990 576.6
D 3 14 5222 6.1 2004 1817 558.1
D 11 82 5184 6.03 2004 1817 558.1
D 6 44 5099 5.88 2004 1817 558.1

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