ASTROSAT CZTI

Data Quality Report

Orbit 35256

Creation date: 2022-04-06T08:12:16.837487
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_047T09_9000005054_35256cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35256cztM0_level2_quad_clean.evt
Size (bytes)1,410,082,560129,021,120
Size1.3 GB 123.0 MB
Events in quadrant A5,775,351851,513
Events in quadrant B17,152,163663,569
Events in quadrant C6,424,233840,732
Events in quadrant D12,542,935717,293

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247844
B0592313
C0260733
D0456183

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12029170.141325%
B12029449437.359714%
C120291000.831324%
D12029181515.088536%

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 16267 12032 1 1 0.01% 0.01%
B 16267 12030 3065 3065 18.84% 25.48%
C 16267 12032 76 76 0.47% 0.63%
D 16267 12032 1579 1579 9.71% 13.12%

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 174408 596.28 1433 1404 290.1
A 13 6 27519 90.01 1433 1404 290.1
A 13 254 20305 65.14 1433 1404 290.1
B 5 236 10952158 46985.5 1207 1174 233.1
B 5 172 1244307 5333.7 1207 1174 233.1
B 4 232 91973 389.58 1207 1174 233.1
C 15 214 502341 1550.14 1387 1398 323.2
C 0 10 404574 1247.61 1387 1398 323.2
C 14 67 58870 177.84 1387 1398 323.2
D 7 80 4273893 13545.46 1294 1258 315.4
D 12 235 915578 2898.65 1294 1258 315.4
D 8 195 450634 1424.65 1294 1258 315.4

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