ASTROSAT CZTI

Data Quality Report

Orbit 31971

Creation date: 2024-06-27T20:34:38.362959
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_053T11_9000004668_31971cztM0_level2.evt modeM0/AS1A10_053T11_9000004668_31971cztM0_level2_quad_clean.evt
Size (bytes)3,319,683,840479,833,920
Size3.1 GB 457.6 MB
Events in quadrant A17,508,2903,099,641
Events in quadrant B28,376,2543,070,094
Events in quadrant C23,710,2932,978,936
Events in quadrant D28,451,8652,840,039

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0765028
B01136327
C09479010
D01093008

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07580
B07580
C07580
D07580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A370274101.107300%
B3702910392.805909%
C3702816724.515502%
D3702826577.175651%

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 41163 37030 15 15 0.04% 0.04%
B 41164 37030 131 131 0.32% 0.35%
C 41164 37031 511 511 1.24% 1.38%
D 41164 37031 2389 2389 5.80% 6.45%

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 13 254 65182 67.41 4518 4427 901.3
A 12 96 51296 52.0 4518 4427 901.3
A 3 137 47661 47.97 4518 4427 901.3
B 6 159 9676931 11303.5 4455 4327 855.7
B 10 245 707930 822.24 4455 4327 855.7
B 0 190 138755 157.09 4455 4327 855.7
C 0 10 4136386 4106.55 4294 4310 1006.2
C 3 233 2012593 1995.88 4294 4310 1006.2
C 14 238 701458 692.84 4294 4310 1006.2
D 7 238 7377916 7281.21 4276 4161 1012.7
D 8 195 2360020 2326.29 4276 4161 1012.7
D 12 218 1084381 1066.66 4276 4161 1012.7

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