ASTROSAT CZTI

Data Quality Report

Orbit 39582

Creation date: 2024-06-27T22:06:26.343291
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_39582cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39582cztM0_level2_quad_clean.evt
Size (bytes)589,849,92094,867,200
Size562.5 MB 90.5 MB
Events in quadrant A6,434,823654,669
Events in quadrant B2,967,711685,711
Events in quadrant C8,391,065491,541
Events in quadrant D3,560,132606,941

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234572
B0133421
C0292031
D0150281

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62003495.629032%
B6200951.532258%
C6200181729.306452%
D6200971.564516%

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 9035 6202 246 246 2.72% 3.97%
B 9035 6202 57 57 0.63% 0.92%
C 9035 6202 1565 1565 17.32% 25.23%
D 9035 6202 79 79 0.87% 1.27%

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 3168705 23770.52 653 639 133.3
A 10 83 472615 3541.31 653 639 133.3
A 9 143 177682 1328.38 653 639 133.3
B 5 255 305792 2386.23 655 634 127.9
B 5 172 73222 567.61 655 634 127.9
B 12 111 15937 119.66 655 634 127.9
C 9 187 3208744 24623.24 561 565 130.3
C 15 208 2721511 20883.66 561 565 130.3
C 15 214 241764 1851.24 561 565 130.3
D 12 227 697216 4443.18 643 622 156.8
D 1 52 101388 642.73 643 622 156.8
D 13 249 89997 570.07 643 622 156.8

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