ASTROSAT CZTI

Data Quality Report

Orbit 34547

Creation date: 2022-02-17T10:24:11.276464
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/AS1A05_097T01_9000004936_34547cztM0_level2.evt modeM0/AS1A05_097T01_9000004936_34547cztM0_level2_quad_clean.evt
Size (bytes)602,553,60053,809,920
Size574.6 MB 51.3 MB
Events in quadrant A3,254,061294,768
Events in quadrant B4,067,926299,777
Events in quadrant C3,470,507300,093
Events in quadrant D7,015,788280,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136671
B0164771
C0141561
D0254181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6507300.461042%
B65072173.334870%
C6507150.230521%
D65075959.143999%

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 7970 6508 8 8 0.10% 0.12%
B 7970 6508 120 120 1.51% 1.84%
C 7970 6508 3 3 0.04% 0.05%
D 7970 6508 350 350 4.39% 5.38%

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 9 143 127551 784.66 791 775 161.6
A 10 83 27499 165.4 791 775 161.6
A 13 6 25799 154.88 791 775 161.6
B 5 172 787218 5263.95 772 750 149.4
B 0 190 64272 425.16 772 750 149.4
B 0 245 51359 338.73 772 750 149.4
C 15 214 288191 1608.14 767 772 178.7
C 14 67 156109 869.13 767 772 178.7
C 0 10 18145 97.2 767 772 178.7
D 8 195 2285118 12149.19 754 732 188.0
D 2 250 662958 3521.96 754 732 188.0
D 12 17 350084 1857.98 754 732 188.0

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