ASTROSAT CZTI

Data Quality Report

Orbit 20160526_G05_246T03_9000000470_level2

Creation date: 2026-03-09T14:29:57.054052
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/AS1G05_246T03_9000000470cztM0_level2.fits modeM0/AS1G05_246T03_9000000470cztM0_level2_quad_clean.evt
Size (bytes)587,718,720640,635,840
Size560.5 MB 611.0 MB
Events in quadrant A3,533,3183,904,774
Events in quadrant B3,410,4943,922,555
Events in quadrant C3,407,9043,641,488
Events in quadrant D3,021,4643,509,480

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013140
B013140
C013140
D013140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01341430
B01412040
C01565470
D01378360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A645178211.272533%
B645179021.398081%
C6451732445.028132%
D645179271.436831%

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 74947 64517 0 0 0.00% 0.00%
B 74946 64514 0 0 0.00% 0.00%
C 74946 64389 0 0 0.00% 0.00%
D 74947 64514 0 0 0.00% 0.00%

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 14 188 3526 11.26 916 854 237.4
A 0 29 3445 10.91 916 854 237.4
A 7 110 3066 9.32 916 854 237.4
B 2 9 3004 11.58 900 853 185.7
B 12 226 2405 8.36 900 853 185.7
B 14 254 2361 8.12 900 853 185.7
C 1 81 2430 6.53 901 830 244.9
C 1 80 2412 6.46 901 830 244.9
C 9 188 2309 6.04 901 830 244.9
D 6 231 2355 6.75 862 780 233.2
D 3 14 2263 6.36 862 780 233.2
D 1 19 2195 6.07 862 780 233.2

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