ASTROSAT CZTI

Data Quality Report

Orbit 00377

Creation date: 2024-06-27T13:59:08.402713
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/AS1P01_161T05_9000000058_00377cztM0_level2.evt modeM0/AS1P01_161T05_9000000058_00377cztM0_level2_quad_clean.evt
Size (bytes)37,506,2403,214,080
Size35.8 MB 3.1 MB
Events in quadrant A292,53920,090
Events in quadrant B249,93019,104
Events in quadrant C280,44119,427
Events in quadrant D295,05314,811

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010181
B09050
C09860
D010280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21510.465116%
B21500.000000%
C21520.930233%
D215115.116279%

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 215 215 16 16 7.44% 7.44%
B 215 215 3 3 1.40% 1.40%
C 215 215 12 12 5.58% 5.58%
D 215 215 18 18 8.37% 8.37%

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 0 69 32919 2053.35 64 63 16.0
A 15 127 6112 378.04 64 63 16.0
A 0 238 2888 176.55 64 63 16.0
B 0 230 3755 221.61 63 63 16.7
B 0 183 1714 99.1 63 63 16.7
B 4 82 1209 68.79 63 63 16.7
C 5 234 28727 1623.9 58 60 17.7
C 10 107 19906 1124.22 58 60 17.7
C 1 1 1348 72.96 58 60 17.7
D 1 5 17561 788.81 61 60 22.2
D 1 4 10975 491.96 61 60 22.2
D 13 117 8823 394.97 61 60 22.2

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
Veto Counter