ASTROSAT CZTI

Data Quality Report

Orbit 29566

Creation date: 2024-06-27T20:05:32.502344
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/AS1C05_019T01_9000004264_29566cztM0_level2.evt modeM0/AS1C05_019T01_9000004264_29566cztM0_level2_quad_clean.evt
Size (bytes)1,474,591,680260,193,600
Size1.4 GB 248.1 MB
Events in quadrant A8,234,3441,697,013
Events in quadrant B8,485,4581,731,020
Events in quadrant C8,580,9061,640,520
Events in quadrant D18,137,0731,565,447

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366483
B0370923
C0371143
D0659274

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180851811.000829%
B180852191.210948%
C180865493.035497%
D1808516389.057230%

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 19710 18088 0 0 0.00% 0.00%
B 19710 18088 9 9 0.05% 0.05%
C 19711 18089 0 0 0.00% 0.00%
D 19710 18088 1350 1350 6.85% 7.46%

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 13 254 33533 73.77 2131 2085 426.3
A 3 137 21869 46.41 2131 2085 426.3
A 0 226 18174 37.74 2131 2085 426.3
B 0 156 71874 174.95 2118 2064 399.0
B 0 190 66857 162.37 2118 2064 399.0
B 12 111 51154 123.02 2118 2064 399.0
C 14 238 403408 852.55 2026 2037 470.8
C 14 254 109813 228.93 2026 2037 470.8
C 3 233 80765 167.23 2026 2037 470.8
D 12 33 6810865 14271.83 2019 1966 477.1
D 13 104 1558679 3262.96 2019 1966 477.1
D 8 195 1130328 2365.11 2019 1966 477.1

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