ASTROSAT CZTI

Data Quality Report

Orbit 33904

Creation date: 2024-06-27T20:53:58.863025
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/AS1T04_090T01_9000004840_33904cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33904cztM0_level2_quad_clean.evt
Size (bytes)540,682,56053,752,320
Size515.6 MB 51.3 MB
Events in quadrant A3,275,051322,941
Events in quadrant B3,637,694317,488
Events in quadrant C3,205,867314,565
Events in quadrant D5,898,546302,276

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132293
B0141582
C0125292
D0212132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52822284.316547%
B52823075.812192%
C52821532.896630%
D52825099.636501%

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 7105 5283 178 178 2.51% 3.37%
B 7105 5283 179 179 2.52% 3.39%
C 7105 5283 100 100 1.41% 1.89%
D 7105 5283 450 450 6.33% 8.52%

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 15 169 845341 6964.71 610 597 121.3
A 7 16 49855 406.12 610 597 121.3
A 13 6 11827 92.59 610 597 121.3
B 5 172 1109974 9592.72 606 590 115.6
B 4 170 30558 259.13 606 590 115.6
B 4 251 29842 252.94 606 590 115.6
C 0 10 456873 3318.59 597 601 137.5
C 15 214 228394 1656.8 597 601 137.5
C 3 233 135623 982.05 597 601 137.5
D 1 52 2165977 14902.91 589 572 145.3
D 8 195 751562 5168.52 589 572 145.3
D 13 249 233624 1603.93 589 572 145.3

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