ASTROSAT CZTI

Data Quality Report

Orbit 40260

Creation date: 2024-06-27T22:14:18.069093
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_022T01_9000005536_40260cztM0_level2.fits modeM0/AS1A12_022T01_9000005536_40260cztM0_level2_quad_clean.evt
Size (bytes)317,278,08083,056,320
Size302.6 MB 79.2 MB
Events in quadrant A2,607,080554,097
Events in quadrant B2,255,757577,576
Events in quadrant C2,799,782553,871
Events in quadrant D3,697,092483,763

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109122
B0101831
C0114461
D0144821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4936390.790113%
B4936150.303890%
C4936731.478930%
D49363947.982172%

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 6937 4937 26 26 0.37% 0.53%
B 6937 4937 7 7 0.10% 0.14%
C 6937 4937 61 61 0.88% 1.24%
D 6937 4937 394 394 5.68% 7.98%

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 429627 3960.73 529 519 108.3
A 13 248 108308 994.91 529 519 108.3
A 13 6 9608 83.89 529 519 108.3
B 0 245 68360 649.08 537 523 104.5
B 5 255 57560 545.74 537 523 104.5
B 4 171 14103 129.94 537 523 104.5
C 14 254 481394 3874.64 526 528 124.1
C 15 214 214360 1722.98 526 528 124.1
C 0 10 23584 185.78 526 528 124.1
D 12 227 1213052 9697.95 509 495 125.0
D 12 79 328746 2625.33 509 495 125.0
D 9 19 56276 446.13 509 495 125.0

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