ASTROSAT CZTI

Data Quality Report

Orbit 07751

Creation date: 2024-06-27T15:23:31.499432
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/AS1G06_064T01_9000001066_07751cztM0_level2.evt modeM0/AS1G06_064T01_9000001066_07751cztM0_level2_quad_clean.evt
Size (bytes)405,236,16074,318,400
Size386.5 MB 70.9 MB
Events in quadrant A2,988,711460,941
Events in quadrant B3,099,470464,272
Events in quadrant C2,797,330452,125
Events in quadrant D2,960,565435,629

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01302
B01302
C01302
D01302

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013394152
B013573160
C012886152
D013367170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6268791.260370%
B6266831.324609%
C6263280.447070%
D6262420.670712%

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 6864 6278 10 10 0.15% 0.16%
B 6864 6276 13 13 0.19% 0.21%
C 6864 6275 0 0 0.00% 0.00%
D 6864 6271 8 8 0.12% 0.13%

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 0 23 104045 678.16 729 711 152.4
A 0 128 37050 238.49 729 711 152.4
A 13 248 31923 204.84 729 711 152.4
B 4 239 120956 857.99 732 713 140.1
B 0 230 66828 471.76 732 713 140.1
B 15 85 23604 163.34 732 713 140.1
C 12 4 31621 186.83 708 711 165.4
C 13 61 5510 29.01 708 711 165.4
C 8 222 3064 14.22 708 711 165.4
D 2 152 156311 894.84 706 683 173.9
D 13 137 45700 258.84 706 683 173.9
D 13 104 29915 168.08 706 683 173.9

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