ASTROSAT CZTI

Data Quality Report

Orbit 28364

Creation date: 2024-06-27T19:50:58.736879
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_101T02_9000004084_28364cztM0_level2.evt modeM0/AS1A10_101T02_9000004084_28364cztM0_level2_quad_clean.evt
Size (bytes)1,174,294,080163,607,040
Size1.1 GB 156.0 MB
Events in quadrant A6,114,8451,050,937
Events in quadrant B6,833,5551,062,446
Events in quadrant C6,203,7951,014,436
Events in quadrant D15,533,253926,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265180
B0284540
C0266240
D0553920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130321070.821056%
B130332031.557585%
C130331721.319727%
D13032166312.760896%

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 14192 13032 0 0 0.00% 0.00%
B 14193 13033 51 51 0.36% 0.39%
C 14193 13035 1 1 0.01% 0.01%
D 14192 13034 1519 1519 10.70% 11.65%

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 13 254 22641 65.55 1583 1543 321.9
A 3 137 15833 44.4 1583 1543 321.9
A 0 226 13393 36.82 1583 1543 321.9
B 10 245 419128 1381.47 1564 1524 302.3
B 10 246 153245 501.91 1564 1524 302.3
B 0 230 82528 267.97 1564 1524 302.3
C 14 238 244195 681.68 1515 1523 356.0
C 3 233 40273 108.85 1515 1523 356.0
C 14 128 12623 31.18 1515 1523 356.0
D 1 52 7767805 21918.87 1474 1434 354.3
D 8 195 906897 2555.47 1474 1434 354.3
D 13 104 875376 2466.51 1474 1434 354.3

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