ASTROSAT CZTI

Data Quality Report

Orbit 36609

Creation date: 2024-06-27T21:29:07.349086
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_073T02_9000005226_36609cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36609cztM0_level2_quad_clean.evt
Size (bytes)513,872,64058,933,440
Size490.1 MB 56.2 MB
Events in quadrant A2,796,601381,423
Events in quadrant B2,525,688387,904
Events in quadrant C3,786,548371,251
Events in quadrant D6,131,526309,332

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110223
B0100852
C0142252
D0215012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4762420.881982%
B4762190.398992%
C47623848.063839%
D476298420.663587%

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 6914 4763 16 16 0.23% 0.34%
B 6914 4763 4 4 0.06% 0.08%
C 6914 4763 297 297 4.30% 6.24%
D 6914 4763 902 902 13.05% 18.94%

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 15 223 203748 1636.44 621 612 124.1
A 10 83 191317 1536.3 621 612 124.1
A 13 254 7483 55.35 621 612 124.1
B 4 171 49195 420.83 615 601 115.5
B 0 213 29292 248.47 615 601 115.5
B 12 111 14095 116.86 615 601 115.5
C 0 207 847222 6319.34 580 586 134.0
C 0 10 457725 3412.11 580 586 134.0
C 15 214 201828 1502.08 580 586 134.0
D 12 235 3373040 24580.21 561 546 137.2
D 12 227 158991 1154.82 561 546 137.2
D 2 250 114298 829.07 561 546 137.2

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