ASTROSAT CZTI

Data Quality Report

Orbit 16861

Creation date: 2024-06-27T17:28:43.807353
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/AS1A05_056T01_9000002498_16861cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16861cztM0_level2_quad_clean.evt
Size (bytes)380,810,88060,024,960
Size363.2 MB 57.2 MB
Events in quadrant A3,357,104363,256
Events in quadrant B2,457,700385,507
Events in quadrant C2,418,034365,611
Events in quadrant D2,961,984354,494

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131981
B0104251
C0102441
D0120371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49653026.082578%
B4965551.107754%
C4965771.550856%
D49651513.041289%

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 5976 4967 148 148 2.48% 2.98%
B 5976 4967 1 1 0.02% 0.02%
C 5976 4967 0 0 0.00% 0.00%
D 5976 4967 84 84 1.41% 1.69%

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 23 984243 8055.92 601 587 122.1
A 0 226 64382 522.46 601 587 122.1
A 9 143 4538 32.35 601 587 122.1
B 10 16 45933 388.79 609 595 116.6
B 12 111 14625 120.31 609 595 116.6
B 15 35 13833 113.52 609 595 116.6
C 14 238 90408 643.05 592 595 139.7
C 3 233 16677 115.14 592 595 139.7
C 13 61 4181 25.68 592 595 139.7
D 1 52 415425 2859.59 593 577 145.1
D 13 104 225003 1546.99 593 577 145.1
D 10 70 45262 308.02 593 577 145.1

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