ASTROSAT CZTI

Data Quality Report

Orbit 42159

Creation date: 2024-06-27T22:37:52.897137
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/AS1A12_088T21_9000005764_42159cztM0_level2.fits modeM0/AS1A12_088T21_9000005764_42159cztM0_level2_quad_clean.evt
Size (bytes)326,669,76077,002,560
Size311.5 MB 73.4 MB
Events in quadrant A2,943,268516,520
Events in quadrant B2,435,247531,835
Events in quadrant C2,221,216508,658
Events in quadrant D4,116,257436,284

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117721
B0105961
C097221
D0156152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4828921.905551%
B4828861.781276%
C482810.020713%
D48274439.177543%

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 6471 4829 85 85 1.31% 1.76%
B 6471 4829 48 48 0.74% 0.99%
C 6471 4829 0 0 0.00% 0.00%
D 6469 4827 388 388 6.00% 8.04%

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 412759 3800.25 521 509 108.5
A 15 222 389656 3587.28 521 509 108.5
A 12 189 67485 617.41 521 509 108.5
B 15 35 189519 1853.63 520 506 102.0
B 0 229 66074 643.02 520 506 102.0
B 5 255 45945 445.62 520 506 102.0
C 15 214 197507 1628.62 513 516 121.0
C 15 111 15873 126.96 513 516 121.0
C 13 61 3519 24.83 513 516 121.0
D 12 6 898036 7393.09 492 478 121.4
D 1 52 392865 3232.05 492 478 121.4
D 12 33 337631 2777.09 492 478 121.4

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