ASTROSAT CZTI

Data Quality Report

Orbit 41596

Creation date: 2024-06-27T22:30:33.327536
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/AS1C07_001T10_9000005678_41596cztM0_level2.fits modeM0/AS1C07_001T10_9000005678_41596cztM0_level2_quad_clean.evt
Size (bytes)388,036,800101,914,560
Size370.1 MB 97.2 MB
Events in quadrant A3,297,828681,473
Events in quadrant B3,227,966692,180
Events in quadrant C3,384,596663,495
Events in quadrant D3,957,868603,773

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136052
B0143472
C0141632
D0163854

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A636680.125668%
B6366330.518379%
C63671612.528663%
D63662483.895696%

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 9050 6368 4 4 0.04% 0.06%
B 9050 6368 8 8 0.09% 0.13%
C 9051 6369 160 160 1.77% 2.51%
D 9050 6368 183 183 2.02% 2.87%

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 615146 4309.85 689 675 142.6
A 13 254 10923 71.88 689 675 142.6
A 7 3 9998 65.39 689 675 142.6
B 0 186 265259 2004.13 685 667 132.0
B 0 190 85311 641.13 685 667 132.0
B 0 245 64555 483.92 685 667 132.0
C 0 10 473770 3027.47 669 672 156.3
C 15 214 279361 1783.4 669 672 156.3
C 0 15 20910 129.51 669 672 156.3
D 13 249 421683 2534.53 668 647 166.1
D 12 218 280574 1685.09 668 647 166.1
D 2 120 201275 1207.73 668 647 166.1

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