ASTROSAT CZTI

Data Quality Report

Orbit 09446

Creation date: 2024-06-27T15:46:12.443481
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/AS1C02_045T01_9000001342_09446cztM0_level2.evt modeM0/AS1C02_045T01_9000001342_09446cztM0_level2_quad_clean.evt
Size (bytes)18,097,9205,281,920
Size17.3 MB 5.0 MB
Events in quadrant A137,84029,344
Events in quadrant B137,07436,732
Events in quadrant C123,51532,522
Events in quadrant D127,35033,439

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B0168
C01612
D01612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055
B054
C044
D055

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018971338
B01548958
C015501012
D01553986

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24220.826446%
B29510.338983%
C26910.371747%
D28300.000000%

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 765 348 0 0 0.00% 0.00%
B 769 415 0 0 0.00% 0.00%
C 769 395 0 0 0.00% 0.00%
D 749 407 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 8 5 21066 2673.0 28 27 7.9
A 1 162 4079 514.8 28 27 7.9
A 1 178 1504 187.65 28 27 7.9
B 0 219 1382 151.09 34 34 8.9
B 12 111 791 84.85 34 34 8.9
B 11 111 582 61.42 34 34 8.9
C 13 61 225 21.07 31 31 9.2
C 8 222 176 15.75 31 31 9.2
C 14 67 105 8.04 31 31 9.2
D 1 52 1757 178.7 32 31 9.7
D 2 234 983 98.57 32 31 9.7
D 7 9 942 94.32 32 31 9.7

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