ASTROSAT CZTI

Data Quality Report

Orbit 39522

Creation date: 2024-06-27T22:05:39.492951
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_39522cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39522cztM0_level2_quad_clean.evt
Size (bytes)327,314,88088,266,240
Size312.2 MB 84.2 MB
Events in quadrant A3,052,329582,502
Events in quadrant B2,303,636608,631
Events in quadrant C3,287,727575,231
Events in quadrant D3,053,898530,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125793
B0109732
C0134762
D0131402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53731021.898381%
B5373250.465289%
C5373601.116695%
D53731041.935604%

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 7226 5374 80 80 1.11% 1.49%
B 7226 5374 14 14 0.19% 0.26%
C 7226 5374 59 59 0.82% 1.10%
D 7226 5374 93 93 1.29% 1.73%

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 422289 3732.36 560 549 113.0
A 6 10 421525 3725.6 560 549 113.0
A 15 222 29999 260.63 560 549 113.0
B 5 255 99583 909.4 562 545 108.9
B 12 111 13637 120.21 562 545 108.9
B 11 111 12672 111.35 562 545 108.9
C 9 187 801771 6302.84 546 549 127.1
C 15 214 226691 1778.95 546 549 127.1
C 15 208 116011 908.29 546 549 127.1
D 12 227 483092 3680.04 539 524 131.1
D 2 249 176177 1339.52 539 524 131.1
D 13 249 136391 1036.11 539 524 131.1

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