ASTROSAT CZTI

Data Quality Report

Orbit 07578

Creation date: 2024-06-27T15:21:13.847364
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/AS1A02_024T01_9000001044_07578cztM0_level2.evt modeM0/AS1A02_024T01_9000001044_07578cztM0_level2_quad_clean.evt
Size (bytes)1,193,215,680171,794,880
Size1.1 GB 163.8 MB
Events in quadrant A10,893,3261,041,280
Events in quadrant B7,125,9931,078,165
Events in quadrant C8,051,6061,067,766
Events in quadrant D9,081,7591,009,289

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0424344
B0310803
C0334983
D0370623

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145809056.207133%
B145803742.565158%
C145802131.460905%
D145806394.382716%

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 15220 14585 492 492 3.23% 3.37%
B 15220 14586 2 2 0.01% 0.01%
C 15220 14586 15 15 0.10% 0.10%
D 15220 14585 387 387 2.54% 2.65%

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 15 239 4117351 11357.84 1759 1723 362.4
A 3 1 20541 51.93 1759 1723 362.4
A 0 226 16763 41.51 1759 1723 362.4
B 0 214 94892 268.43 1789 1739 347.0
B 0 219 49661 138.09 1789 1739 347.0
B 12 111 36984 101.56 1789 1739 347.0
C 9 68 1200136 2973.28 1725 1731 403.1
C 8 229 71806 173.86 1725 1731 403.1
C 9 54 35647 84.15 1725 1731 403.1
D 2 152 1157148 2760.81 1696 1645 418.5
D 2 14 551975 1314.89 1696 1645 418.5
D 12 233 526909 1255.0 1696 1645 418.5

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