ASTROSAT CZTI

Data Quality Report

Orbit 20160724_G05_213T01_9000000556_level2

Creation date: 2025-11-04T11:09:50.253176
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_213T01_9000000556cztM0_level2.fits modeM0/AS1G05_213T01_9000000556cztM0_level2_quad_clean.evt
Size (bytes)32,376,96021,594,240
Size30.9 MB 20.6 MB
Events in quadrant A194,496105,210
Events in quadrant B188,500104,480
Events in quadrant C188,818101,479
Events in quadrant D163,19095,907

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071570
B070600
C070310
D071860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3466371.067513%
B3466431.240623%
C3466320.923254%
D3466300.865551%

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 3466 3466 0 0 0.00% 0.00%
B 3466 3466 0 0 0.00% 0.00%
C 3466 3466 0 0 0.00% 0.00%
D 3466 3466 0 0 0.00% 0.00%

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 14 188 195 10.21 50 48 14.4
A 14 204 171 8.55 50 48 14.4
A 0 29 155 7.43 50 48 14.4
B 2 9 176 10.49 49 48 12.2
B 5 128 140 7.54 49 48 12.2
B 14 254 132 6.89 49 48 12.2
C 12 250 143 6.53 49 46 14.9
C 1 81 139 6.26 49 46 14.9
C 2 127 138 6.19 49 46 14.9
D 11 82 135 6.62 46 42 14.0
D 3 14 134 6.55 46 42 14.0
D 6 114 131 6.34 46 42 14.0

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