ASTROSAT CZTI

Data Quality Report

Orbit 39539

Creation date: 2024-06-27T22:05:53.617753
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_018T01_9000005488_39539cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39539cztM0_level2_quad_clean.evt
Size (bytes)416,528,64092,439,360
Size397.2 MB 88.2 MB
Events in quadrant A3,823,660608,510
Events in quadrant B2,472,469653,141
Events in quadrant C5,401,682554,600
Events in quadrant D3,261,590570,203

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151123
B0118412
C0201292
D0139292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59022664.506947%
B590280.135547%
C590267911.504575%
D5902530.898001%

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 7215 5903 229 229 3.17% 3.88%
B 7215 5903 0 0 0.00% 0.00%
C 7215 5903 642 642 8.90% 10.88%
D 7215 5903 52 52 0.72% 0.88%

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 6 10 965250 7759.48 612 599 124.3
A 10 83 447293 3593.12 612 599 124.3
A 15 222 33174 262.03 612 599 124.3
B 0 197 18934 153.68 619 602 119.3
B 12 111 15481 124.73 619 602 119.3
B 11 111 14157 113.63 619 602 119.3
C 9 187 2313098 16977.59 584 586 136.2
C 15 208 553892 4062.16 584 586 136.2
C 15 214 239239 1752.1 584 586 136.2
D 12 227 731308 4891.37 606 587 149.4
D 13 249 77867 517.3 606 587 149.4
D 13 174 43923 290.09 606 587 149.4

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