ASTROSAT CZTI

Data Quality Report

Orbit 42637

Creation date: 2024-06-27T22:42:30.547255
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/AS1A05_174T01_9000005820_42637cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42637cztM0_level2_quad_clean.evt
Size (bytes)313,891,20083,269,440
Size299.3 MB 79.4 MB
Events in quadrant A2,652,410554,572
Events in quadrant B2,412,980568,427
Events in quadrant C2,415,643552,918
Events in quadrant D3,742,553489,558

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01084163
B01067439
C01024631
D01466172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507080.157791%
B5074280.551833%
C507940.078756%
D50752955.812808%

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 6793 5081 1 1 0.01% 0.02%
B 6794 5086 20 20 0.29% 0.39%
C 6791 5088 2 2 0.03% 0.04%
D 6798 5086 279 279 4.10% 5.49%

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 469027 4016.72 561 549 116.6
A 3 137 6406 50.22 561 549 116.6
A 13 254 6252 48.9 561 549 116.6
B 3 112 122791 1135.16 556 539 107.7
B 0 245 80775 745.03 556 539 107.7
B 0 168 15989 143.46 556 539 107.7
C 15 214 209126 1611.65 553 556 129.4
C 3 233 38488 293.11 553 556 129.4
C 14 254 11171 82.02 553 556 129.4
D 12 218 574301 4307.66 541 525 133.2
D 2 249 234319 1755.22 541 525 133.2
D 1 52 191112 1430.84 541 525 133.2

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