ASTROSAT CZTI

Data Quality Report

Orbit 00309

Creation date: 2024-06-27T13:59:01.941855
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/AS1P01_126T04_9000000036_00309cztM0_level2.evt modeM0/AS1P01_126T04_9000000036_00309cztM0_level2_quad_clean.evt
Size (bytes)752,348,16044,703,360
Size717.5 MB 42.6 MB
Events in quadrant A5,829,261252,464
Events in quadrant B5,769,240255,139
Events in quadrant C5,711,836249,277
Events in quadrant D5,140,015244,324

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208672
B0206961
C0205781
D0188821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5019110.219167%
B501920.039849%
C501940.079697%
D501980.159394%

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 7265 5020 139 139 1.91% 2.77%
B 7265 5020 75 75 1.03% 1.49%
C 7265 5020 78 78 1.07% 1.55%
D 7265 5020 36 36 0.50% 0.72%

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 0 69 162662 494.47 1463 1450 326.0
A 14 47 6680 16.04 1463 1450 326.0
A 13 239 5022 10.96 1463 1450 326.0
B 0 190 21226 56.03 1494 1506 351.9
B 0 183 13730 34.73 1494 1506 351.9
B 5 46 11981 29.76 1494 1506 351.9
C 1 1 221374 569.98 1369 1421 385.9
C 2 192 57904 146.37 1369 1421 385.9
C 3 159 39962 99.87 1369 1421 385.9
D 9 52 34975 81.95 1295 1345 410.4
D 13 7 29864 69.5 1295 1345 410.4
D 13 117 25143 57.99 1295 1345 410.4

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