ASTROSAT CZTI

Data Quality Report

Orbit 20125

Creation date: 2024-06-27T18:11:35.136058
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_180T01_9000002992_20125cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20125cztM0_level2_quad_clean.evt
Size (bytes)711,956,160112,164,480
Size679.0 MB 107.0 MB
Events in quadrant A5,908,380681,547
Events in quadrant B4,176,405759,391
Events in quadrant C4,380,076725,937
Events in quadrant D6,579,727697,975

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224062
B0171532
C0178753
D0247562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A764597612.766514%
B76461231.608684%
C76452843.714846%
D76456288.214519%

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 8290 7647 564 564 6.80% 7.38%
B 8291 7648 31 31 0.37% 0.41%
C 8290 7647 47 47 0.57% 0.61%
D 8290 7647 498 498 6.01% 6.51%

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 14 238 2239701 12227.04 899 882 183.1
A 14 237 126325 685.09 899 882 183.1
A 14 254 82184 444.02 899 882 183.1
B 10 245 219442 1186.16 960 937 184.2
B 0 197 56871 303.64 960 937 184.2
B 4 80 40259 213.46 960 937 184.2
C 3 233 638187 2947.77 920 927 216.2
C 14 238 143919 661.44 920 927 216.2
C 0 207 10425 43.93 920 927 216.2
D 1 52 2194307 9852.14 910 885 222.6
D 14 34 683571 3066.4 910 885 222.6
D 11 176 148538 663.21 910 885 222.6

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