ASTROSAT CZTI

Data Quality Report

Orbit 42421

Creation date: 2024-06-27T22:39:52.082674
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/AS1A12_101T04_9000005804_42421cztM0_level2.fits modeM0/AS1A12_101T04_9000005804_42421cztM0_level2_quad_clean.evt
Size (bytes)511,974,720105,318,720
Size488.3 MB 100.4 MB
Events in quadrant A3,449,762736,849
Events in quadrant B2,958,227748,491
Events in quadrant C3,099,500711,620
Events in quadrant D8,928,560529,201

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142322
B0135412
C0134222
D0312172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6638150.225972%
B6638240.361555%
C663840.060259%
D6638150522.672492%

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 9562 6640 3 3 0.03% 0.05%
B 9562 6640 14 14 0.15% 0.21%
C 9562 6640 0 0 0.00% 0.00%
D 9562 6640 1377 1377 14.40% 20.74%

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 10 83 586114 3896.61 733 718 150.2
A 14 223 21512 138.41 733 718 150.2
A 13 254 9116 55.9 733 718 150.2
B 5 172 78212 543.91 722 702 142.5
B 3 112 30177 206.84 722 702 142.5
B 12 111 18298 123.48 722 702 142.5
C 15 214 277391 1656.74 712 717 167.0
C 3 110 26943 157.04 712 717 167.0
C 10 34 8968 49.41 712 717 167.0
D 12 33 4527231 28488.69 647 629 158.9
D 1 52 1143242 7191.17 647 629 158.9
D 12 6 568549 3574.27 647 629 158.9

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