ASTROSAT CZTI

Data Quality Report

Orbit 25142

Creation date: 2024-06-27T19:14:19.766401
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/AS1A07_018T07_9000003680_25142cztM0_level2.evt modeM0/AS1A07_018T07_9000003680_25142cztM0_level2_quad_clean.evt
Size (bytes)515,540,16089,009,280
Size491.7 MB 84.9 MB
Events in quadrant A3,389,829576,111
Events in quadrant B3,553,547585,218
Events in quadrant C3,592,300563,474
Events in quadrant D4,664,801545,316

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141660
B0146130
C0148210
D0180910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6099380.623053%
B6099761.246106%
C60981302.131847%
D60992844.656501%

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 7454 6100 0 0 0.00% 0.00%
B 7454 6099 11 11 0.15% 0.18%
C 7453 6098 6 6 0.08% 0.10%
D 7454 6099 200 200 2.68% 3.28%

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 8 205 19379 107.19 874 860 172.8
A 13 254 10619 56.49 874 860 172.8
A 0 226 7455 38.17 874 860 172.8
B 0 229 79546 482.52 868 848 163.1
B 3 64 65153 394.28 868 848 163.1
B 12 111 18897 110.66 868 848 163.1
C 14 238 138107 696.48 851 860 197.1
C 9 54 45402 226.03 851 860 197.1
C 7 247 35341 174.98 851 860 197.1
D 1 52 835199 4135.37 843 821 201.8
D 8 195 392299 1940.25 843 821 201.8
D 2 244 121783 599.52 843 821 201.8

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