ASTROSAT CZTI

Data Quality Report

Orbit 15156

Creation date: 2024-06-27T17:04:32.076797
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/AS1A04_218T08_9000002236_15156cztM0_level2.evt modeM0/AS1A04_218T08_9000002236_15156cztM0_level2_quad_clean.evt
Size (bytes)455,065,920102,170,880
Size434.0 MB 97.4 MB
Events in quadrant A3,650,852655,398
Events in quadrant B3,199,161677,565
Events in quadrant C3,243,518675,315
Events in quadrant D3,249,161635,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154083
B0134832
C0135152
D0140222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6460340.526316%
B6460450.696594%
C6460280.433437%
D6461560.866739%

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 7696 6462 2 2 0.03% 0.03%
B 7696 6462 0 0 0.00% 0.00%
C 7696 6462 0 0 0.00% 0.00%
D 7697 6463 36 36 0.47% 0.56%

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 15 239 623985 3990.16 782 765 156.2
A 12 189 11888 71.21 782 765 156.2
A 13 248 10888 64.81 782 765 156.2
B 0 229 23841 155.72 796 776 148.1
B 12 111 17326 111.73 796 776 148.1
B 3 64 15304 98.08 796 776 148.1
C 3 233 182899 1017.37 784 789 179.0
C 13 61 5458 26.08 784 789 179.0
C 9 236 2875 11.65 784 789 179.0
D 10 70 196124 1049.72 771 750 186.1
D 2 16 37550 197.72 771 750 186.1
D 2 234 22134 114.89 771 750 186.1

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