ASTROSAT CZTI

Data Quality Report

Orbit 33797

Creation date: 2024-06-27T20:52:45.736895
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/AS1A11_086T01_9000004820_33797cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33797cztM0_level2_quad_clean.evt
Size (bytes)546,635,52045,126,720
Size521.3 MB 43.0 MB
Events in quadrant A3,222,750269,781
Events in quadrant B2,801,874280,665
Events in quadrant C2,430,003281,120
Events in quadrant D7,819,375242,080

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121621
B0108551
C095551
D0261031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A414842710.294118%
B41482044.918033%
C4148320.771456%
D4148228154.990357%

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 4148 4148 299 299 7.21% 7.21%
B 4148 4148 157 157 3.78% 3.78%
C 4148 4148 32 32 0.77% 0.77%
D 4148 4148 2248 2248 54.19% 54.19%

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 15 237 1313461 13442.83 484 476 97.7
A 13 6 11795 115.89 484 476 97.7
A 12 16 10621 103.87 484 476 97.7
B 5 172 585742 6153.21 492 480 95.1
B 5 255 122742 1285.41 492 480 95.1
B 3 112 31411 325.2 492 480 95.1
C 15 214 178916 1580.88 489 492 112.9
C 3 233 126523 1116.67 489 492 112.9
C 4 254 81425 717.09 489 492 112.9
D 12 235 5103892 54802.65 375 363 93.1
D 8 195 556716 5974.22 375 363 93.1
D 2 250 478045 5129.44 375 363 93.1

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