ASTROSAT CZTI

Data Quality Report

Orbit 39677

Creation date: 2024-06-27T22:07:37.130011
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_051T01_9000005490_39677cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39677cztM0_level2_quad_clean.evt
Size (bytes)658,229,76081,506,880
Size627.7 MB 77.7 MB
Events in quadrant A12,302,539165,193
Events in quadrant B3,045,987696,607
Events in quadrant C5,506,302623,451
Events in quadrant D3,097,577610,245

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401692
B0124801
C0200121
D0128191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5322432881.322811%
B5322430.807967%
C53223847.215333%
D5322701.315295%

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 7294 5323 3708 3708 50.84% 69.66%
B 7294 5323 38 38 0.52% 0.71%
C 7294 5323 460 460 6.31% 8.64%
D 7294 5323 58 58 0.80% 1.09%

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 15 222 9392812 101858.89 451 444 92.2
A 15 174 834550 9045.76 451 444 92.2
A 10 83 308261 3338.23 451 444 92.2
B 5 172 447932 3731.57 626 611 119.9
B 5 255 99812 827.53 626 611 119.9
B 15 85 20350 164.66 626 611 119.9
C 9 187 1847956 13507.23 589 594 136.8
C 15 208 1119075 8177.92 589 594 136.8
C 15 214 217561 1586.38 589 594 136.8
D 13 249 185611 1259.58 607 590 146.9
D 12 227 110226 746.38 607 590 146.9
D 2 120 109058 738.43 607 590 146.9

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