ASTROSAT CZTI

Data Quality Report

Orbit 33742

Creation date: 2024-06-27T20:52:01.114160
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/AS1A11_086T01_9000004816_33742cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33742cztM0_level2_quad_clean.evt
Size (bytes)499,734,72079,741,440
Size476.6 MB 76.0 MB
Events in quadrant A2,638,580528,306
Events in quadrant B4,028,124512,675
Events in quadrant C3,073,398538,244
Events in quadrant D5,066,047494,899

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108892
B0151681
C0122241
D0185111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4856380.782537%
B48563887.990115%
C48561202.471170%
D48562825.807249%

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 6979 4857 21 21 0.30% 0.43%
B 6979 4857 322 322 4.61% 6.63%
C 6979 4857 96 96 1.38% 1.98%
D 6979 4857 287 287 4.11% 5.91%

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 4 69529 549.46 639 629 125.4
A 15 237 53736 423.52 639 629 125.4
A 15 169 23311 180.88 639 629 125.4
B 5 172 1249718 10830.79 623 609 115.3
B 0 213 59496 510.6 623 609 115.3
B 12 1 58548 502.38 623 609 115.3
C 0 10 214025 1477.12 632 640 144.5
C 15 214 211761 1461.45 632 640 144.5
C 9 187 153453 1057.82 632 640 144.5
D 8 195 1325139 7971.45 617 609 166.2
D 2 250 313662 1884.05 617 609 166.2
D 1 47 254595 1528.57 617 609 166.2

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