ASTROSAT CZTI

Data Quality Report

Orbit 32415

Creation date: 2024-06-27T20:39:58.478376
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_059T01_9000004704_32415cztM0_level2.evt modeM0/AS1T04_059T01_9000004704_32415cztM0_level2_quad_clean.evt
Size (bytes)1,112,592,96067,599,360
Size1.0 GB 64.5 MB
Events in quadrant A3,391,212499,297
Events in quadrant B5,520,102496,026
Events in quadrant C18,599,65997,380
Events in quadrant D5,707,212459,126

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147451
B0219010
C0601740
D0216240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70842042.879729%
B70843004.234896%
C7084704299.407115%
D70844746.691135%

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 7194 7088 8 8 0.11% 0.11%
B 7194 7088 15 15 0.21% 0.21%
C 7194 7088 6266 6266 87.10% 88.40%
D 7194 7088 297 297 4.13% 4.19%

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 15 174 36237 200.75 864 844 176.3
A 13 6 17909 96.79 864 844 176.3
A 13 254 13924 74.19 864 844 176.3
B 6 159 1940366 11752.21 850 827 165.0
B 0 190 84931 509.61 850 827 165.0
B 10 245 67293 402.74 850 827 165.0
C 3 233 17690364 346216.2 215 215 51.1
C 14 238 37193 723.7 215 215 51.1
C 14 254 11547 221.78 215 215 51.1
D 8 195 1297818 6478.25 825 800 200.2
D 12 218 818968 4086.52 825 800 200.2
D 1 47 195387 971.91 825 800 200.2

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