ASTROSAT CZTI

Data Quality Report

Orbit 01303

Creation date: 2024-06-27T14:10:40.152575
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/AS1G04_002T02_9000000230_01303cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01303cztM0_level2_quad_clean.evt
Size (bytes)1,201,844,16097,246,080
Size1.1 GB 92.7 MB
Events in quadrant A7,262,954653,729
Events in quadrant B7,938,262663,150
Events in quadrant C7,306,647640,612
Events in quadrant D13,470,814543,716

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260932
B0280851
C0261791
D0446771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A634920.031501%
B6349280.441014%
C634970.110254%
D6349137721.688455%

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 7669 6350 142 142 1.85% 2.24%
B 7669 6350 293 293 3.82% 4.61%
C 7669 6350 134 134 1.75% 2.11%
D 7669 6349 3223 3223 42.03% 50.76%

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 15 233 19629 39.4 1879 1891 450.2
A 12 243 19277 38.62 1879 1891 450.2
A 11 79 7453 12.36 1879 1891 450.2
B 8 4 165370 351.77 1974 1984 464.5
B 6 53 107388 226.93 1974 1984 464.5
B 12 52 83332 175.14 1974 1984 464.5
C 15 241 307895 627.07 1762 1820 488.1
C 8 208 36304 70.65 1762 1820 488.1
C 10 19 22482 42.33 1762 1820 488.1
D 13 169 5242661 11049.52 1542 1590 474.3
D 12 22 2284144 4812.21 1542 1590 474.3
D 10 84 73605 151.83 1542 1590 474.3

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