ASTROSAT CZTI

Data Quality Report

Orbit 04895

Creation date: 2024-06-27T14:48:33.426403
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/AS1G05_237T01_9000000620_04895cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04895cztM0_level2_quad_clean.evt
Size (bytes)560,013,12075,841,920
Size534.1 MB 72.3 MB
Events in quadrant A3,318,100465,741
Events in quadrant B3,717,171461,685
Events in quadrant C3,130,514461,548
Events in quadrant D6,336,914437,529

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141212
B0153951
C0137731
D0234481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6745831.230541%
B6745731.082283%
C6745390.578206%
D6745119917.776130%

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 7385 6746 14 14 0.19% 0.21%
B 7385 6746 2 2 0.03% 0.03%
C 7385 6746 0 0 0.00% 0.00%
D 7385 6746 954 954 12.92% 14.14%

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 50 57519 334.32 820 804 169.6
A 13 251 53843 312.65 820 804 169.6
A 8 15 19408 109.67 820 804 169.6
B 15 204 380596 2394.59 827 811 158.6
B 8 3 32014 196.74 827 811 158.6
B 15 255 16311 97.73 827 811 158.6
C 13 61 6525 31.04 796 802 184.4
C 8 222 5284 24.31 796 802 184.4
C 14 67 5226 24.0 796 802 184.4
D 1 52 2012955 11395.84 717 697 176.6
D 1 31 447268 2529.03 717 697 176.6
D 2 136 389992 2204.66 717 697 176.6

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