ASTROSAT CZTI

Data Quality Report

Orbit 25152

Creation date: 2024-06-27T19:14:37.625524
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/AS1A07_018T09_9000003682_25152cztM0_level2.evt modeM0/AS1A07_018T09_9000003682_25152cztM0_level2_quad_clean.evt
Size (bytes)490,933,44070,081,920
Size468.2 MB 66.8 MB
Events in quadrant A3,176,617425,788
Events in quadrant B3,400,817428,757
Events in quadrant C3,877,440409,216
Events in quadrant D3,971,016403,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133880
B0139940
C0159750
D0157840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6516500.767342%
B6516881.350522%
C6516771.181707%
D65161281.964395%

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 7496 6516 0 0 0.00% 0.00%
B 7496 6516 27 27 0.36% 0.41%
C 7496 6516 0 0 0.00% 0.00%
D 7496 6516 86 86 1.15% 1.32%

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 10100 56.38 819 801 164.9
A 13 158 9962 55.55 819 801 164.9
A 13 207 8749 48.19 819 801 164.9
B 0 229 236156 1510.95 806 787 155.8
B 12 111 19261 118.59 806 787 155.8
B 11 111 17479 107.15 806 787 155.8
C 7 247 703032 3871.35 776 779 181.4
C 14 238 123781 678.08 776 779 181.4
C 3 233 18487 97.62 776 779 181.4
D 1 52 581976 3029.43 787 765 191.9
D 8 195 295210 1534.73 787 765 191.9
D 12 235 90569 468.08 787 765 191.9

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