ASTROSAT CZTI

Data Quality Report

Orbit 20200119_A07_148T02_9000003444_level2

Creation date: 2020-01-21T11:09:06.436650
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_148T02_9000003444cztM0_level2_bc.evt modeM0/AS1A07_148T02_9000003444cztM0_level2_quad_clean.evt
Size (bytes)3,398,947,2001,118,240,640
Size3.2 GB 1.0 GB
Events in quadrant A20,187,8107,079,025
Events in quadrant B20,524,3827,145,053
Events in quadrant C21,464,4586,866,433
Events in quadrant D34,634,5776,613,547

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01630
B01630
C01630
D01630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018270
B018280
C018280
D018280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01909630
B01919590
C01973280
D02431210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8997511111.234787%
B8997912261.362540%
C8997820012.223877%
D8998040344.483218%

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 112755 89976 44 44 0.04% 0.05%
B 112755 89972 8 8 0.01% 0.01%
C 112755 89975 211 211 0.19% 0.23%
D 112755 89975 599 599 0.53% 0.67%

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 6 16 535934 487.19 5093 5004 1089.8
A 13 254 136689 120.84 5093 5004 1089.8
A 0 226 33329 25.99 5093 5004 1089.8
B 0 229 296610 311.0 5092 4980 937.7
B 0 190 230657 240.66 5092 4980 937.7
B 0 230 192797 200.29 5092 4980 937.7
C 10 9 1406413 1231.35 4888 4875 1138.2
C 0 10 708172 617.9 4888 4875 1138.2
C 7 247 251768 216.91 4888 4875 1138.2
D 1 52 8356437 7414.05 4935 4771 1126.5
D 7 238 5146352 4564.35 4935 4771 1126.5
D 1 239 880830 777.71 4935 4771 1126.5

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