ASTROSAT CZTI

Data Quality Report

Orbit 44938

Creation date: 2024-06-27T23:08:11.369913
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/AS1A13_017T02_9000006032_44938cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44938cztM0_level2_quad_clean.evt
Size (bytes)608,376,960106,280,640
Size580.2 MB 101.4 MB
Events in quadrant A5,410,431771,155
Events in quadrant B3,783,449800,366
Events in quadrant C3,133,518776,989
Events in quadrant D9,710,856436,044

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200111
B0152811
C0131121
D0331654

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62151522.445696%
B62161191.914414%
C6216490.788288%
D6215255241.061947%

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 7465 6216 1 1 0.01% 0.02%
B 7466 6217 34 34 0.46% 0.55%
C 7466 6217 1 1 0.01% 0.02%
D 7465 6215 2130 2130 28.53% 34.27%

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 10 83 2356646 14603.25 779 763 161.3
A 0 243 24610 147.82 779 763 161.3
A 7 3 9015 51.15 779 763 161.3
B 0 219 101505 668.26 772 748 150.8
B 5 172 100298 660.26 772 748 150.8
B 4 171 83988 552.08 772 748 150.8
C 3 233 50456 277.14 772 778 179.3
C 14 254 21986 118.31 772 778 179.3
C 15 208 16191 85.99 772 778 179.3
D 13 187 4583079 30637.2 587 570 149.6
D 13 249 1428773 9548.51 587 570 149.6
D 1 52 573545 3830.73 587 570 149.6

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