ASTROSAT CZTI

Data Quality Report

Orbit 41624

Creation date: 2024-06-27T22:30:51.859884
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_035T02_9000005680_41624cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41624cztM0_level2_quad_clean.evt
Size (bytes)565,836,48083,111,040
Size539.6 MB 79.3 MB
Events in quadrant A3,098,498628,332
Events in quadrant B2,685,267644,141
Events in quadrant C3,141,240600,640
Events in quadrant D11,577,858245,549

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126063
B0120342
C0128242
D0382852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5687240.422015%
B5687190.334095%
C56871342.356251%
D5687356362.651662%

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 7060 5688 12 12 0.17% 0.21%
B 7060 5688 0 0 0.00% 0.00%
C 7060 5688 124 124 1.76% 2.18%
D 7060 5688 3240 3240 45.89% 56.96%

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 550951 4230.23 628 616 130.1
A 15 223 61536 468.27 628 616 130.1
A 13 248 37502 283.53 628 616 130.1
B 0 186 186894 1530.3 622 604 121.7
B 5 255 26886 215.9 622 604 121.7
B 12 111 15371 121.31 622 604 121.7
C 0 10 389347 2715.45 608 612 143.2
C 15 214 250615 1746.36 608 612 143.2
C 0 15 85291 591.51 608 612 143.2
D 12 79 8149427 73029.54 452 437 111.6
D 13 249 1433556 12843.31 452 437 111.6
D 2 249 107212 956.9 452 437 111.6

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