ASTROSAT CZTI

Data Quality Report

Orbit 04307

Creation date: 2024-06-27T14:40:10.707731
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/AS1G05_219T01_9000000540_04307cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04307cztM0_level2_quad_clean.evt
Size (bytes)1,300,792,320182,689,920
Size1.2 GB 174.2 MB
Events in quadrant A11,960,8231,051,864
Events in quadrant B9,098,0941,078,842
Events in quadrant C8,192,4991,072,170
Events in quadrant D8,883,8701,046,409

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03864
B038610
C03862
D03866

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048840656
B040173635
C038771612
D040787664

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186207303.920516%
B186142191.176534%
C186251170.628188%
D186081981.064058%

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 21000 18844 462 462 2.20% 2.45%
B 20999 18852 12 12 0.06% 0.06%
C 21000 18842 3 3 0.01% 0.02%
D 21000 18821 89 89 0.42% 0.47%

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 13 251 1109935 2568.58 2105 2056 431.3
A 14 238 1094650 2533.14 2105 2056 431.3
A 15 234 1017698 2354.73 2105 2056 431.3
B 14 167 217430 513.94 2163 2113 418.9
B 15 204 185422 437.54 2163 2113 418.9
B 3 0 90036 209.87 2163 2113 418.9
C 9 54 50010 99.01 2069 2080 484.1
C 9 247 43300 85.15 2069 2080 484.1
C 13 61 17215 31.26 2069 2080 484.1
D 2 136 178069 352.44 2056 1993 499.6
D 13 223 177712 351.73 2056 1993 499.6
D 13 53 111276 218.75 2056 1993 499.6

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