ASTROSAT CZTI

Data Quality Report

Orbit 20210601_A10_058T14_9000004430_level2

Creation date: 2021-06-07T10:58:00.484976
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/AS1A10_058T14_9000004430cztM0_level2_bc.evt modeM0/AS1A10_058T14_9000004430cztM0_level2_quad_clean.evt
Size (bytes)5,474,424,9601,016,524,800
Size5.1 GB 969.4 MB
Events in quadrant A20,886,4176,688,014
Events in quadrant B39,854,9936,660,809
Events in quadrant C18,758,5586,433,516
Events in quadrant D81,061,3275,700,969

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01230
C01220
D01220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015720
B015800
C015760
D015760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01770510
B02389850
C01728010
D03682310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7745419322.494384%
B7735419332.498901%
C7745521762.809373%
D770921130814.668189%

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 90452 77664 67 67 0.07% 0.09%
B 90452 77617 25 25 0.03% 0.03%
C 90452 77673 24 24 0.03% 0.03%
D 90451 77341 3955 3955 4.37% 5.11%

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 13 3848139 4133.31 4374 4316 930.0
A 13 254 144496 150.74 4374 4316 930.0
A 8 192 132211 137.53 4374 4316 930.0
B 6 159 21141978 25721.9 4377 4290 821.8
B 0 190 691604 836.37 4377 4290 821.8
B 5 172 252936 302.57 4377 4290 821.8
C 3 233 1279293 1324.11 4169 4175 963.0
C 10 22 934391 965.96 4169 4175 963.0
C 0 10 189377 192.32 4169 4175 963.0
D 8 195 56455088 60933.24 4046 3926 926.4
D 12 218 4134225 4458.23 4046 3926 926.4
D 1 52 1702205 1833.12 4046 3926 926.4

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