ASTROSAT CZTI

Data Quality Report

Orbit 10241

Creation date: 2024-06-27T15:56:51.522320
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/AS1A03_095T03_9000001474_10241cztM0_level2.evt modeM0/AS1A03_095T03_9000001474_10241cztM0_level2_quad_clean.evt
Size (bytes)917,928,000152,928,000
Size875.4 MB 145.8 MB
Events in quadrant A5,564,961958,038
Events in quadrant B6,417,425955,920
Events in quadrant C5,448,185958,077
Events in quadrant D9,514,116885,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255514
B0276943
C0254783
D0365833

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12630190.150435%
B126301631.290578%
C12630140.110847%
D126306325.003959%

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 14050 12632 1 1 0.01% 0.01%
B 14050 12632 88 88 0.63% 0.70%
C 14050 12632 0 0 0.00% 0.00%
D 14050 12632 597 597 4.25% 4.73%

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 8 15 18429 58.5 1434 1403 291.1
A 15 174 17177 54.2 1434 1403 291.1
A 0 226 13055 40.03 1434 1403 291.1
B 4 239 256886 935.18 1438 1403 273.2
B 0 219 174207 632.54 1438 1403 273.2
B 10 247 150746 546.66 1438 1403 273.2
C 13 61 10515 28.23 1392 1399 322.9
C 14 67 8627 22.38 1392 1399 322.9
C 12 4 6314 15.22 1392 1399 322.9
D 1 52 2800016 8572.45 1354 1314 326.5
D 8 195 934135 2857.24 1354 1314 326.5
D 5 222 307223 937.0 1354 1314 326.5

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