ASTROSAT CZTI

Data Quality Report

Orbit 36864

Creation date: 2024-06-27T21:32:31.304844
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_075T01_9000005244_36864cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36864cztM0_level2_quad_clean.evt
Size (bytes)365,146,56046,687,680
Size348.2 MB 44.5 MB
Events in quadrant A2,724,203348,195
Events in quadrant B841,6535,911
Events in quadrant C2,969,340348,528
Events in quadrant D4,144,839325,766

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117233
B055812
C0121432
D0160712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5485170.309936%
B54855485100.000000%
C5485791.440292%
D54853245.907019%

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 7128 5486 2 2 0.03% 0.04%
B 7127 5484 0 0 0.00% 0.00%
C 7128 5486 68 68 0.95% 1.24%
D 7128 5486 306 306 4.29% 5.58%

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 249745 1959.03 621 608 127.2
A 9 143 31346 241.7 621 608 127.2
A 13 248 20158 153.73 621 608 127.2
B 12 243 759586 174773.77 13 13 4.3
B 12 144 14386 3307.15 13 13 4.3
B 5 255 2844 651.4 13 13 4.3
C 15 214 233589 1656.99 600 605 140.6
C 0 10 181944 1289.69 600 605 140.6
C 0 207 137886 976.35 600 605 140.6
D 12 17 496694 3434.58 589 574 144.4
D 12 227 468090 3236.56 589 574 144.4
D 13 249 416517 2879.53 589 574 144.4

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