ASTROSAT CZTI

Data Quality Report

Orbit 31903

Creation date: 2024-06-27T20:34:01.732991
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_123T09_9000004654_31903cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31903cztM0_level2_quad_clean.evt
Size (bytes)754,750,080123,050,880
Size719.8 MB 117.4 MB
Events in quadrant A3,554,819911,572
Events in quadrant B6,471,868846,501
Events in quadrant C5,504,941726,352
Events in quadrant D6,885,052785,739

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146061
B0234471
C0209451
D0251831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6535971.484315%
B65366229.516524%
C6536160524.556304%
D653672611.107711%

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 7835 6536 0 0 0.00% 0.00%
B 7836 6537 430 430 5.49% 6.58%
C 7836 6537 165 165 2.11% 2.52%
D 7836 6537 692 692 8.83% 10.59%

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 11638 59.52 921 906 180.3
A 3 137 8001 39.35 921 906 180.3
A 0 226 7988 39.28 921 906 180.3
B 6 159 1745669 10984.52 866 848 158.8
B 5 172 1105963 6957.25 866 848 158.8
B 0 155 51032 315.93 866 848 158.8
C 3 233 1206542 6875.57 769 775 175.4
C 14 254 422259 2403.4 769 775 175.4
C 14 238 415251 2363.44 769 775 175.4
D 7 238 1074296 5505.03 845 828 195.0
D 8 195 1027055 5262.77 845 828 195.0
D 12 33 789729 4045.69 845 828 195.0

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