ASTROSAT CZTI

Data Quality Report

Orbit 22850

Creation date: 2024-06-27T18:46:36.211025
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/AS1A07_054T01_9000003378_22850cztM0_level2.evt modeM0/AS1A07_054T01_9000003378_22850cztM0_level2_quad_clean.evt
Size (bytes)85,507,20024,932,160
Size81.5 MB 23.8 MB
Events in quadrant A580,103169,522
Events in quadrant B603,730170,748
Events in quadrant C605,537162,237
Events in quadrant D713,372159,314

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024850
B025070
C025180
D028970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A122700.000000%
B122630.244698%
C122670.570962%
D1226221.794454%

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 1227 1227 0 0 0.00% 0.00%
B 1226 1226 0 0 0.00% 0.00%
C 1226 1226 0 0 0.00% 0.00%
D 1226 1226 15 15 1.22% 1.22%

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 2347 68.14 150 146 32.3
A 0 226 1311 36.07 150 146 32.3
A 3 137 1168 31.64 150 146 32.3
B 12 111 3546 109.13 152 148 31.1
B 11 111 2937 89.57 152 148 31.1
B 14 111 2535 76.66 152 148 31.1
C 14 238 23418 640.64 148 149 36.3
C 10 22 2149 55.06 148 149 36.3
C 13 61 982 22.93 148 149 36.3
D 1 52 60852 1626.25 147 142 37.3
D 13 153 49571 1324.07 147 142 37.3
D 9 85 24931 664.03 147 142 37.3

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