ASTROSAT CZTI

Data Quality Report

Orbit 20310

Creation date: 2024-06-27T18:13:43.981920
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/AS1A05_174T01_9000003008_20310cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20310cztM0_level2_quad_clean.evt
Size (bytes)899,519,040138,303,360
Size857.8 MB 131.9 MB
Events in quadrant A6,384,321867,965
Events in quadrant B5,661,459888,400
Events in quadrant C8,423,081837,898
Events in quadrant D6,038,388841,196

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258362
B0235322
C0318712
D0249432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108792542.334773%
B108792171.994669%
C108797757.123817%
D108792642.426694%

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 12969 10881 75 75 0.58% 0.69%
B 12969 10881 44 44 0.34% 0.40%
C 12969 10881 372 372 2.87% 3.42%
D 12969 10881 133 133 1.03% 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 14 238 777745 2845.37 1364 1335 272.9
A 4 2 130544 473.52 1364 1335 272.9
A 9 143 113297 410.32 1364 1335 272.9
B 7 220 178207 691.53 1348 1314 255.8
B 4 142 84702 325.99 1348 1314 255.8
B 0 230 40029 151.35 1348 1314 255.8
C 3 9 3133329 10273.87 1303 1311 304.9
C 14 238 201860 657.86 1303 1311 304.9
C 13 61 9119 25.61 1303 1311 304.9
D 1 52 632123 1914.65 1347 1308 329.5
D 11 176 163571 492.5 1347 1308 329.5
D 7 96 71322 212.51 1347 1308 329.5

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