ASTROSAT CZTI

Data Quality Report

Orbit 43376

Creation date: 2024-06-27T22:51:12.901629
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/AS1A09_143T01_9000005870_43376cztM0_level2.fits modeM0/AS1A09_143T01_9000005870_43376cztM0_level2_quad_clean.evt
Size (bytes)578,859,840163,886,400
Size552.0 MB 156.3 MB
Events in quadrant A6,120,8391,091,096
Events in quadrant B4,594,8391,129,797
Events in quadrant C4,869,9621,073,667
Events in quadrant D5,058,798968,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243623
B0209873
C0210093
D0229833

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A100831721.705842%
B10083820.813250%
C1008490.089250%
D100842252.231257%

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 15912 10086 149 149 0.94% 1.48%
B 15912 10086 44 44 0.28% 0.44%
C 15913 10087 5 5 0.03% 0.05%
D 15913 10087 195 195 1.23% 1.93%

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 1051424 4771.06 1073 1051 220.2
A 13 248 641767 2910.3 1073 1051 220.2
A 15 237 213078 963.08 1073 1051 220.2
B 5 172 190235 924.95 1068 1039 204.5
B 0 189 101363 490.47 1068 1039 204.5
B 3 112 46986 224.63 1068 1039 204.5
C 15 214 416532 1728.35 1042 1044 240.4
C 3 233 338839 1405.16 1042 1044 240.4
C 15 111 38550 156.02 1042 1044 240.4
D 1 52 344812 1381.88 1032 1003 248.8
D 10 118 248776 995.88 1032 1003 248.8
D 13 249 135308 539.82 1032 1003 248.8

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