ASTROSAT CZTI

Data Quality Report

Orbit 18107

Creation date: 2024-06-27T17:45:01.435435
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/AS1A05_019T01_9000002688_18107cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18107cztM0_level2_quad_clean.evt
Size (bytes)581,901,120106,706,880
Size554.9 MB 101.8 MB
Events in quadrant A3,439,612742,901
Events in quadrant B3,707,066739,205
Events in quadrant C3,275,736688,062
Events in quadrant D6,780,058627,926

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141272
B0148592
C0134832
D0244482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62001151.854839%
B62002013.241935%
C62001272.048387%
D6200106317.145161%

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 7530 6200 7 7 0.09% 0.11%
B 7530 6200 66 66 0.88% 1.06%
C 7530 6201 5 5 0.07% 0.08%
D 7530 6201 880 880 11.69% 14.19%

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 4 2 83441 481.04 865 850 171.7
A 15 174 31482 178.41 865 850 171.7
A 0 226 7715 39.98 865 850 171.7
B 7 220 318575 1981.51 848 829 160.4
B 0 189 27262 164.84 848 829 160.4
B 3 209 18144 107.98 848 829 160.4
C 14 238 127436 687.42 800 808 184.2
C 0 207 18119 93.98 800 808 184.2
C 9 160 6302 29.82 800 808 184.2
D 7 238 1882356 10035.38 783 761 187.5
D 11 176 981194 5229.08 783 761 187.5
D 10 70 438278 2333.47 783 761 187.5

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