ASTROSAT CZTI

Data Quality Report

Orbit 11969

Creation date: 2024-06-27T16:20:38.230192
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/AS1A04_164T01_9000001770_11969cztM0_level2.evt modeM0/AS1A04_164T01_9000001770_11969cztM0_level2_quad_clean.evt
Size (bytes)301,870,08047,646,720
Size287.9 MB 45.4 MB
Events in quadrant A2,112,419298,292
Events in quadrant B2,628,615295,017
Events in quadrant C1,878,381292,293
Events in quadrant D2,252,902277,710

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087962
B0103141
C081541
D091271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3951691.746393%
B39512085.264490%
C3951190.480891%
D3951551.392053%

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 5217 3953 4 4 0.08% 0.10%
B 5217 3952 108 108 2.07% 2.73%
C 5217 3953 0 0 0.00% 0.00%
D 5217 3953 28 28 0.54% 0.71%

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 1 162 68615 675.85 496 487 100.8
A 1 178 37152 363.73 496 487 100.8
A 1 161 32307 315.66 496 487 100.8
B 4 239 524043 5598.03 491 480 93.5
B 15 204 57271 607.22 491 480 93.5
B 0 218 44117 466.57 491 480 93.5
C 13 61 3502 26.96 481 483 112.0
C 14 234 2437 17.45 481 483 112.0
C 3 202 1224 6.62 481 483 112.0
D 8 195 144171 1253.57 474 461 114.6
D 13 104 70399 610.06 474 461 114.6
D 1 52 56510 488.91 474 461 114.6

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