ASTROSAT CZTI

Data Quality Report

Orbit 01103

Creation date: 2024-06-27T14:07:29.206403
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/AS1P01_997T02_9000000212_01103cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01103cztM0_level2_quad_clean.evt
Size (bytes)1,055,900,16097,436,160
Size1007.0 MB 92.9 MB
Events in quadrant A7,684,487640,170
Events in quadrant B8,236,934635,587
Events in quadrant C7,846,947615,418
Events in quadrant D7,779,219606,715

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274452
B0290711
C0278711
D0277591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6493110.169413%
B6493210.323425%
C6493250.385030%
D64931502.310180%

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 6894 6494 277 277 4.02% 4.27%
B 6894 6493 334 334 4.84% 5.14%
C 6894 6494 246 246 3.57% 3.79%
D 6894 6494 454 454 6.59% 6.99%

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 12 243 39084 78.45 1991 2001 472.7
A 11 79 7964 12.61 1991 2001 472.7
A 0 253 6440 9.39 1991 2001 472.7
B 0 137 274493 561.34 2059 2069 485.3
B 5 191 41949 82.17 2059 2069 485.3
B 15 22 30024 57.6 2059 2069 485.3
C 15 241 314290 591.54 1898 1968 528.0
C 10 207 62150 113.99 1898 1968 528.0
C 3 79 34292 61.22 1898 1968 528.0
D 2 216 200226 324.57 1948 1954 610.9
D 10 125 24130 36.3 1948 1954 610.9
D 2 16 16308 23.5 1948 1954 610.9

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