ASTROSAT CZTI

Data Quality Report

Orbit 35574

Creation date: 2022-04-27T20:47:26.318617
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/AS1A11_065T21_9000005094_35574cztM0_level2.evt modeM0/AS1A11_065T21_9000005094_35574cztM0_level2_quad_clean.evt
Size (bytes)530,447,04090,403,200
Size505.9 MB 86.2 MB
Events in quadrant A3,546,219575,001
Events in quadrant B4,531,185578,063
Events in quadrant C3,830,858587,147
Events in quadrant D3,736,153564,925

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146043
B0176042
C0151132
D0150512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61853515.675020%
B61856039.749394%
C61851582.554568%
D61851442.328213%

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 9020 6186 305 305 3.38% 4.93%
B 9020 6187 408 408 4.52% 6.59%
C 9020 6187 95 95 1.05% 1.54%
D 9020 6187 112 112 1.24% 1.81%

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 15 169 778530 5644.21 679 664 137.8
A 10 83 124239 896.66 679 664 137.8
A 13 6 10118 68.6 679 664 137.8
B 5 172 1601528 12277.01 674 655 130.4
B 5 200 122010 930.66 674 655 130.4
B 4 81 51034 386.35 674 655 130.4
C 0 10 712404 4438.49 685 688 160.4
C 15 214 251418 1563.63 685 688 160.4
C 9 187 168351 1045.6 685 688 160.4
D 8 195 222213 1312.82 688 667 168.8
D 7 80 171844 1014.35 688 667 168.8
D 13 249 155603 918.11 688 667 168.8

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