ASTROSAT CZTI

Data Quality Report

Orbit 41205

Creation date: 2024-06-27T22:25:55.244752
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_100T01_9000005628_41205cztM0_level2.fits modeM0/AS1A12_100T01_9000005628_41205cztM0_level2_quad_clean.evt
Size (bytes)336,297,60096,531,840
Size320.7 MB 92.1 MB
Events in quadrant A3,126,356648,291
Events in quadrant B3,221,950651,630
Events in quadrant C2,774,432626,334
Events in quadrant D2,861,871580,818

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129293
B0137772
C0121832
D0130452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5955130.218304%
B5955681.141898%
C5955230.386230%
D5955601.007557%

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 7268 5956 4 4 0.06% 0.07%
B 7268 5956 54 54 0.74% 0.91%
C 7268 5956 18 18 0.25% 0.30%
D 7268 5956 53 53 0.73% 0.89%

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 578702 4374.74 640 628 132.1
A 12 189 36256 269.62 640 628 132.1
A 13 6 14065 101.69 640 628 132.1
B 0 186 237337 1927.11 631 613 122.8
B 5 255 222142 1803.41 631 613 122.8
B 0 229 221505 1798.23 631 613 122.8
C 15 214 256917 1741.71 624 630 147.1
C 0 10 68941 464.24 624 630 147.1
C 15 159 7464 46.44 624 630 147.1
D 12 16 131822 858.18 623 606 152.9
D 2 120 122230 795.44 623 606 152.9
D 2 249 74118 480.78 623 606 152.9

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