ASTROSAT CZTI

Data Quality Report

Orbit 26600

Creation date: 2024-06-27T19:30:51.637766
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/AS1A09_095T02_9000003846_26600cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26600cztM0_level2_quad_clean.evt
Size (bytes)958,705,920140,662,080
Size914.3 MB 134.1 MB
Events in quadrant A4,084,595957,914
Events in quadrant B7,818,513936,689
Events in quadrant C5,501,453931,524
Events in quadrant D11,030,241815,666

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181350
B0291890
C0219940
D0392930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8889440.494994%
B8890114612.890889%
C88902713.048369%
D8889165618.629767%

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 9839 8891 3 3 0.03% 0.03%
B 9840 8891 654 654 6.65% 7.36%
C 9840 8890 48 48 0.49% 0.54%
D 9838 8888 1591 1591 16.17% 17.90%

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 12 96 55095 258.86 1040 1016 208.9
A 13 254 13871 61.53 1040 1016 208.9
A 12 189 13789 61.14 1040 1016 208.9
B 3 64 3225150 16962.3 996 969 190.1
B 0 189 608054 3193.85 996 969 190.1
B 15 222 31301 159.58 996 969 190.1
C 3 233 1253816 5362.7 1004 1008 233.6
C 14 238 161049 685.06 1004 1008 233.6
C 15 208 151649 644.83 1004 1008 233.6
D 7 80 5418974 22368.95 922 901 242.2
D 1 52 1743813 7195.75 922 901 242.2
D 2 250 309908 1275.76 922 901 242.2

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