ASTROSAT CZTI

Data Quality Report

Orbit 31935

Creation date: 2024-06-27T20:34:21.735067
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/AS1A10_059T01_9000004656_31935cztM0_level2.evt modeM0/AS1A10_059T01_9000004656_31935cztM0_level2_quad_clean.evt
Size (bytes)1,659,870,720245,079,360
Size1.5 GB 233.7 MB
Events in quadrant A7,174,3591,718,371
Events in quadrant B13,040,7651,661,839
Events in quadrant C11,498,2751,612,830
Events in quadrant D17,638,2241,483,406

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297953
B0481633
C0438443
D0622483

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136962421.766939%
B1369710497.658611%
C136979717.089144%
D13697234117.091334%

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 17342 13697 4 4 0.02% 0.03%
B 17341 13696 491 491 2.83% 3.58%
C 17341 13696 174 174 1.00% 1.27%
D 17342 13698 2362 2362 13.62% 17.24%

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 12 96 56639 151.69 1838 1808 361.5
A 13 254 27274 70.45 1838 1808 361.5
A 3 137 17429 43.22 1838 1808 361.5
B 6 159 3591546 10924.95 1772 1731 328.6
B 4 80 2055098 6249.05 1772 1731 328.6
B 5 172 294058 889.64 1772 1731 328.6
C 3 233 3902798 10118.69 1702 1716 385.5
C 0 10 585181 1513.4 1702 1716 385.5
C 14 238 290921 750.14 1702 1716 385.5
D 12 33 7353568 18698.2 1685 1645 393.2
D 8 195 2317902 5890.95 1685 1645 393.2
D 13 249 1155286 2934.06 1685 1645 393.2

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