ASTROSAT CZTI

Data Quality Report

Orbit 41889

Creation date: 2024-06-27T22:34:24.841328
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/AS1A12_101T04_9000005714_41889cztM0_level2.fits modeM0/AS1A12_101T04_9000005714_41889cztM0_level2_quad_clean.evt
Size (bytes)898,493,760155,125,440
Size856.9 MB 147.9 MB
Events in quadrant A7,901,3891,072,228
Events in quadrant B4,828,9671,139,714
Events in quadrant C5,797,0691,032,466
Events in quadrant D13,933,743738,118

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301463
B0216403
C0239373
D0485393

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103085285.122235%
B10308570.552969%
C103094103.977107%
D10309306429.721602%

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 14398 10311 438 438 3.04% 4.25%
B 14398 10311 21 21 0.15% 0.20%
C 14399 10312 397 397 2.76% 3.85%
D 14399 10312 2723 2723 18.91% 26.41%

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 14 24 2690427 11971.58 1096 1076 224.6
A 10 83 878956 3907.86 1096 1076 224.6
A 14 250 77744 341.29 1096 1076 224.6
B 0 190 195425 905.07 1109 1079 214.7
B 5 255 192086 889.52 1109 1079 214.7
B 4 141 37604 170.1 1109 1079 214.7
C 0 10 978705 3931.12 1059 1063 248.7
C 15 214 400864 1607.61 1059 1063 248.7
C 14 254 243890 976.41 1059 1063 248.7
D 12 79 8230236 35698.65 937 908 230.5
D 13 249 1038734 4502.07 937 908 230.5
D 12 6 493108 2135.15 937 908 230.5

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