ASTROSAT CZTI

Data Quality Report

Orbit 27189

Creation date: 2024-06-27T19:37:32.656855
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/AS1T03_243T01_9000003918_27189cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27189cztM0_level2_quad_clean.evt
Size (bytes)630,273,600105,053,760
Size601.1 MB 100.2 MB
Events in quadrant A4,171,137658,560
Events in quadrant B4,253,529673,543
Events in quadrant C4,463,540633,791
Events in quadrant D5,619,491621,235

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178810
B0179750
C0187680
D0225530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85581081.261977%
B85591802.103049%
C85592873.353195%
D85593393.960743%

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 9018 8561 1 1 0.01% 0.01%
B 9019 8562 5 5 0.06% 0.06%
C 9019 8562 50 50 0.55% 0.58%
D 9019 8562 187 187 2.07% 2.18%

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 6 16 24002 106.64 1066 1044 215.3
A 13 254 13146 56.21 1066 1044 215.3
A 8 192 11167 47.02 1066 1044 215.3
B 12 111 25323 117.66 1065 1038 206.4
B 11 111 22548 104.21 1065 1038 206.4
B 3 112 22324 103.13 1065 1038 206.4
C 15 208 341775 1416.09 1012 1020 240.6
C 14 238 161296 666.07 1012 1020 240.6
C 2 16 10067 37.6 1012 1020 240.6
D 1 52 1204486 4448.81 1011 991 270.5
D 2 250 219928 809.32 1011 991 270.5
D 12 233 115519 423.36 1011 991 270.5

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