ASTROSAT CZTI

Data Quality Report

Orbit 34062

Creation date: 2024-06-27T20:56:04.571321
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/AS1C07_001T04_9000004868_34062cztM0_level2.evt modeM0/AS1C07_001T04_9000004868_34062cztM0_level2_quad_clean.evt
Size (bytes)688,112,64074,413,440
Size656.2 MB 71.0 MB
Events in quadrant A5,985,245479,417
Events in quadrant B7,059,187464,867
Events in quadrant C2,936,899498,668
Events in quadrant D4,528,459466,232

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212222
B0241231
C0116241
D0167961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489091618.732106%
B4890211943.333333%
C4890651.329243%
D48902104.294479%

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 6983 4891 716 716 10.25% 14.64%
B 6983 4891 1946 1946 27.87% 39.79%
C 6983 4891 65 65 0.93% 1.33%
D 6983 4891 195 195 2.79% 3.99%

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 15 169 3812084 34178.8 559 550 111.5
A 10 83 9541 80.62 559 550 111.5
A 13 254 7582 63.06 559 550 111.5
B 5 31 1780568 18272.64 512 500 97.4
B 5 15 1652186 16954.78 512 500 97.4
B 5 14 988914 10146.21 512 500 97.4
C 0 10 237411 1870.19 558 562 126.6
C 15 214 215762 1699.25 558 562 126.6
C 0 207 175514 1381.45 558 562 126.6
D 13 168 865100 6390.5 558 543 135.3
D 8 195 688139 5082.47 558 543 135.3
D 2 250 252628 1863.32 558 543 135.3

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