ASTROSAT CZTI

Data Quality Report

Orbit 28586

Creation date: 2024-06-27T19:53:40.336810
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/AS1A10_102T03_9000004106_28586cztM0_level2.evt modeM0/AS1A10_102T03_9000004106_28586cztM0_level2_quad_clean.evt
Size (bytes)564,177,60081,241,920
Size538.0 MB 77.5 MB
Events in quadrant A3,467,081515,498
Events in quadrant B3,524,791523,407
Events in quadrant C3,462,807504,268
Events in quadrant D6,205,725477,931

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142331
B0144301
C0141061
D0229426

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6287911.447431%
B6288701.113232%
C62881171.860687%
D628770911.277239%

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 7502 6287 11 11 0.15% 0.17%
B 7503 6288 3 3 0.04% 0.05%
C 7503 6288 7 7 0.09% 0.11%
D 7502 6287 656 656 8.74% 10.43%

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 98981 568.46 869 854 172.6
A 13 254 10244 54.4 869 854 172.6
A 1 113 8189 42.49 869 854 172.6
B 15 33 88577 548.88 852 833 159.9
B 4 171 62055 382.97 852 833 159.9
B 12 111 18939 113.26 852 833 159.9
C 14 238 137725 716.3 833 843 191.1
C 0 207 49535 254.8 833 843 191.1
C 7 247 26958 136.66 833 843 191.1
D 1 52 2302666 11884.36 814 796 193.7
D 7 80 412222 2124.16 814 796 193.7
D 8 195 357707 1842.7 814 796 193.7

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