ASTROSAT CZTI

Data Quality Report

Orbit 41635

Creation date: 2024-06-27T22:30:58.143737
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_035T02_9000005680_41635cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41635cztM0_level2_quad_clean.evt
Size (bytes)518,158,08079,424,640
Size494.2 MB 75.7 MB
Events in quadrant A2,788,241618,578
Events in quadrant B2,463,837629,153
Events in quadrant C3,207,077556,657
Events in quadrant D10,338,755255,155

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111932
B0105242
C0124022
D0340572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4920150.304878%
B4920210.426829%
C49202485.040650%
D4920302061.382114%

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 7073 4921 3 3 0.04% 0.06%
B 7073 4921 5 5 0.07% 0.10%
C 7073 4921 237 237 3.35% 4.82%
D 7073 4921 3117 3117 44.07% 63.34%

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 510700 4368.29 576 566 116.8
A 2 79 15415 127.15 576 566 116.8
A 9 254 12871 105.37 576 566 116.8
B 0 189 103412 945.33 573 559 108.8
B 4 141 60429 550.27 573 559 108.8
B 0 190 17237 153.29 573 559 108.8
C 0 10 550497 4382.09 540 544 125.5
C 14 254 318713 2535.21 540 544 125.5
C 15 214 211113 1677.84 540 544 125.5
D 12 79 7625349 67500.57 461 447 113.0
D 2 249 572073 5060.4 461 447 113.0
D 13 249 242689 2144.48 461 447 113.0

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