ASTROSAT CZTI

Data Quality Report

Orbit 36945

Creation date: 2024-06-27T21:33:26.354077
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/AS1A11_024T01_9000005250_36945cztM0_level2.evt modeM0/AS1A11_024T01_9000005250_36945cztM0_level2_quad_clean.evt
Size (bytes)1,027,653,120123,572,160
Size980.0 MB 117.8 MB
Events in quadrant A6,150,703721,913
Events in quadrant B7,853,189727,533
Events in quadrant C6,863,385722,934
Events in quadrant D9,389,480683,581

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265934
B0318235
C0282073
D0367963

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12813290.226333%
B128122561.998127%
C128131531.194100%
D128138486.618278%

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 18551 12816 17 17 0.09% 0.13%
B 18551 12816 179 179 0.96% 1.40%
C 18551 12816 128 128 0.69% 1.00%
D 18551 12816 770 770 4.15% 6.01%

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 10 83 441223 1510.68 1449 1424 291.1
A 15 237 39818 131.88 1449 1424 291.1
A 15 174 22582 72.68 1449 1424 291.1
B 5 184 743932 2711.98 1440 1403 273.8
B 5 172 400522 1457.72 1440 1403 273.8
B 0 213 321172 1167.91 1440 1403 273.8
C 15 214 532416 1611.45 1413 1422 329.5
C 14 254 404546 1223.39 1413 1422 329.5
C 0 10 376392 1137.95 1413 1422 329.5
D 12 17 1434815 4326.95 1369 1334 331.3
D 2 250 1100323 3317.29 1369 1334 331.3
D 2 153 483092 1454.18 1369 1334 331.3

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