ASTROSAT CZTI

Data Quality Report

Orbit 14540

Creation date: 2024-06-27T16:56:37.435408
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/AS1G08_081T01_9000002144_14540cztM0_level2.evt modeM0/AS1G08_081T01_9000002144_14540cztM0_level2_quad_clean.evt
Size (bytes)132,969,6006,194,880
Size126.8 MB 5.9 MB
Events in quadrant A974,50715,701
Events in quadrant B959,02515,544
Events in quadrant C994,93715,982
Events in quadrant D980,67814,767

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038632
B038461
C039691
D039371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1697754.419564%
B1697714.183854%
C1697593.476724%
D1697663.889216%

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 2408 1699 4 4 0.17% 0.24%
B 2408 1699 1 1 0.04% 0.06%
C 2408 1699 0 0 0.00% 0.00%
D 2408 1699 1 1 0.04% 0.06%

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 85545 1755.02 228 222 48.6
A 12 189 9461 190.04 228 222 48.6
A 0 226 2066 37.93 228 222 48.6
B 0 189 17397 373.31 224 218 46.0
B 0 219 11944 254.81 224 218 46.0
B 3 209 11589 247.1 224 218 46.0
C 3 233 151931 2932.41 215 216 51.7
C 13 61 1504 24.89 215 216 51.7
C 14 225 962 14.42 215 216 51.7
D 12 110 103394 1867.11 219 212 55.3
D 2 152 19412 347.43 219 212 55.3
D 10 199 10494 186.06 219 212 55.3

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