ASTROSAT CZTI

Data Quality Report

Orbit 30678

Creation date: 2024-06-27T20:18:32.114945
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_094T81_9000004426_30678cztM0_level2.evt modeM0/AS1A10_094T81_9000004426_30678cztM0_level2_quad_clean.evt
Size (bytes)837,740,160127,748,160
Size798.9 MB 121.8 MB
Events in quadrant A3,360,211904,395
Events in quadrant B5,340,543891,239
Events in quadrant C4,051,094862,934
Events in quadrant D12,149,765724,028

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145831
B0212271
C0166021
D0409481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69701422.037303%
B69711572.252188%
C69711712.453020%
D6971262737.684694%

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 7215 6971 32 32 0.44% 0.46%
B 7216 6972 0 0 0.00% 0.00%
C 7216 6972 10 10 0.14% 0.14%
D 7216 6972 2698 2698 37.39% 38.70%

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 0 13 115726 679.2 838 820 169.2
A 13 254 12376 68.31 838 820 169.2
A 8 192 11807 64.94 838 820 169.2
B 6 159 1999239 12801.81 820 801 156.1
B 0 230 39305 246.65 820 801 156.1
B 0 190 32474 202.89 820 801 156.1
C 3 233 671087 3631.99 791 795 184.6
C 14 238 129216 695.85 791 795 184.6
C 10 22 118725 639.01 791 795 184.6
D 8 195 5358895 31414.1 723 703 170.6
D 12 218 3008385 17633.49 723 703 170.6
D 12 233 376737 2204.62 723 703 170.6

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