ASTROSAT CZTI

Data Quality Report

Orbit 38124

Creation date: 2024-06-27T21:48:42.498390
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_065T21_9000005364_38124cztM0_level2.fits modeM0/AS1A11_065T21_9000005364_38124cztM0_level2_quad_clean.evt
Size (bytes)153,938,88039,533,760
Size146.8 MB 37.7 MB
Events in quadrant A1,747,118264,419
Events in quadrant B1,240,846268,471
Events in quadrant C1,147,816258,104
Events in quadrant D1,380,747239,806

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0675510
B051901
C047645
D056459

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2309542.338675%
B2311160.692341%
C230850.216638%
D2307150.650195%

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 2311 2311 39 39 1.69% 1.69%
B 2311 2311 4 4 0.17% 0.17%
C 2311 2310 1 1 0.04% 0.04%
D 2311 2309 13 13 0.56% 0.56%

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 12 16 374135 6716.78 264 258 55.7
A 10 83 180142 3231.65 264 258 55.7
A 7 16 82862 1484.0 264 258 55.7
B 0 229 112934 2145.48 263 256 52.5
B 5 172 47892 907.03 263 256 52.5
B 4 21 33666 636.15 263 256 52.5
C 15 214 97383 1539.81 263 264 63.1
C 0 10 8506 130.68 263 264 63.1
C 3 233 6595 100.38 263 264 63.1
D 1 52 105633 1633.78 263 256 64.5
D 0 137 58980 910.46 263 256 64.5
D 2 249 40451 623.19 263 256 64.5

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