ASTROSAT CZTI

Data Quality Report

Orbit 27746

Creation date: 2024-06-27T19:43:49.971999
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_002T05_9000004000_27746cztM0_level2.evt modeM0/AS1A10_002T05_9000004000_27746cztM0_level2_quad_clean.evt
Size (bytes)472,389,120110,609,280
Size450.5 MB 105.5 MB
Events in quadrant A3,255,778751,940
Events in quadrant B3,307,778747,533
Events in quadrant C3,538,778716,222
Events in quadrant D3,784,366702,763

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136300
B0138620
C0144040
D0153160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6186711.147753%
B6187801.293034%
C61861121.810540%
D61861552.505658%

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 7336 6186 6 6 0.08% 0.10%
B 7337 6187 6 6 0.08% 0.10%
C 7336 6186 1 1 0.01% 0.02%
D 7336 6186 83 83 1.13% 1.34%

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 133121 823.56 808 793 160.7
A 13 254 10908 62.95 808 793 160.7
A 8 192 7216 39.97 808 793 160.7
B 10 245 113797 766.02 790 771 147.5
B 0 190 46506 309.96 790 771 147.5
B 4 200 31870 210.77 790 771 147.5
C 3 233 327989 1809.46 773 779 180.8
C 14 238 123518 678.74 773 779 180.8
C 10 22 70638 386.32 773 779 180.8
D 1 52 616346 3372.82 782 764 182.5
D 13 104 121302 660.44 782 764 182.5
D 2 250 48810 263.25 782 764 182.5

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