ASTROSAT CZTI

Data Quality Report

Orbit 44194

Creation date: 2024-06-27T23:00:21.664335
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/AS1A13_074T08_9000005966_44194cztM0_level2.fits modeM0/AS1A13_074T08_9000005966_44194cztM0_level2_quad_clean.evt
Size (bytes)476,429,760106,862,400
Size454.4 MB 101.9 MB
Events in quadrant A5,034,285708,635
Events in quadrant B4,021,879729,828
Events in quadrant C3,140,602706,245
Events in quadrant D4,921,840626,342

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205391
B0162431
C0139991
D0191201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66622033.047133%
B66621912.867007%
C6663811.215669%
D66623304.953467%

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 7577 6663 56 56 0.74% 0.84%
B 7577 6663 69 69 0.91% 1.04%
C 7578 6664 13 13 0.17% 0.20%
D 7577 6663 236 236 3.11% 3.54%

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 1474143 9349.59 760 742 157.6
A 15 223 510438 3234.32 760 742 157.6
A 15 174 69838 438.45 760 742 157.6
B 5 172 368039 2451.43 755 731 149.8
B 0 230 193140 1284.15 755 731 149.8
B 0 219 126030 836.25 755 731 149.8
C 14 254 119317 666.46 749 752 177.9
C 4 254 66254 368.19 749 752 177.9
C 3 233 19179 103.58 749 752 177.9
D 1 52 739034 3873.83 739 713 190.6
D 11 176 330736 1731.57 739 713 190.6
D 13 249 326534 1709.52 739 713 190.6

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