ASTROSAT CZTI

Data Quality Report

Orbit 41700

Creation date: 2024-06-27T22:31:46.477338
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_077T12_9000005692_41700cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41700cztM0_level2_quad_clean.evt
Size (bytes)370,166,400106,116,480
Size353.0 MB 101.2 MB
Events in quadrant A3,514,164708,613
Events in quadrant B2,907,722729,972
Events in quadrant C3,179,852688,014
Events in quadrant D3,594,090632,759

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141792
B0130942
C0134662
D0154302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6505100.153728%
B650560.092237%
C6504290.445879%
D65041652.536900%

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 9341 6507 4 4 0.04% 0.06%
B 9341 6507 0 0 0.00% 0.00%
C 9340 6506 33 33 0.35% 0.51%
D 9340 6506 139 139 1.49% 2.14%

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 606354 4007.26 732 717 151.1
A 9 240 55737 364.05 732 717 151.1
A 6 10 12237 76.22 732 717 151.1
B 0 245 31301 214.21 727 706 142.8
B 12 111 18482 124.46 727 706 142.8
B 11 111 17343 116.49 727 706 142.8
C 15 214 267995 1602.99 712 716 166.7
C 0 10 131367 783.57 712 716 166.7
C 15 159 4894 25.06 712 716 166.7
D 2 249 482217 2772.56 705 684 173.7
D 13 249 231391 1328.36 705 684 173.7
D 12 6 132846 760.96 705 684 173.7

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