ASTROSAT CZTI

Data Quality Report

Orbit 28722

Creation date: 2024-06-27T19:55:24.571624
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/AS1A10_123T06_9000004122_28722cztM0_level2.evt modeM0/AS1A10_123T06_9000004122_28722cztM0_level2_quad_clean.evt
Size (bytes)611,441,28084,438,720
Size583.1 MB 80.5 MB
Events in quadrant A4,241,279518,849
Events in quadrant B3,825,180523,135
Events in quadrant C3,807,416504,948
Events in quadrant D6,138,728491,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173642
B0160702
C0158122
D0233313

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74464636.218104%
B74462222.981467%
C74461832.457695%
D74455827.817327%

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 7766 7446 287 287 3.70% 3.85%
B 7766 7446 29 29 0.37% 0.39%
C 7766 7446 0 0 0.00% 0.00%
D 7765 7445 397 397 5.11% 5.33%

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 6 16 669887 3615.66 920 901 185.0
A 15 174 19567 100.88 920 901 185.0
A 13 254 11666 58.18 920 901 185.0
B 0 230 121549 693.52 917 892 174.0
B 4 80 77196 438.59 917 892 174.0
B 12 111 21485 118.37 917 892 174.0
C 3 233 207105 994.14 884 888 207.4
C 14 238 144747 693.52 884 888 207.4
C 13 61 6163 25.43 884 888 207.4
D 1 52 2237678 10711.15 876 851 208.8
D 8 195 348003 1662.35 876 851 208.8
D 12 233 108245 514.26 876 851 208.8

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