ASTROSAT CZTI

Data Quality Report

Orbit 24658

Creation date: 2024-06-27T19:08:27.948199
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/AS1T03_191T01_9000003618_24658cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24658cztM0_level2_quad_clean.evt
Size (bytes)428,518,080111,104,640
Size408.7 MB 106.0 MB
Events in quadrant A2,765,405755,034
Events in quadrant B2,936,637762,023
Events in quadrant C2,842,923721,421
Events in quadrant D4,029,520711,980

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121651
B0126071
C0122691
D0160431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5935560.943555%
B5936811.364555%
C59361041.752022%
D5936961.617251%

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 6235 5936 2 2 0.03% 0.03%
B 6236 5937 7 7 0.11% 0.12%
C 6236 5937 9 9 0.14% 0.15%
D 6236 5937 30 30 0.48% 0.51%

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 13 254 11006 71.24 711 696 144.7
A 12 96 10868 70.29 711 696 144.7
A 3 137 6730 41.69 711 696 144.7
B 0 230 66523 483.62 702 682 136.1
B 0 190 59945 435.3 702 682 136.1
B 5 172 25459 181.99 702 682 136.1
C 14 238 107880 672.09 676 679 159.5
C 7 247 40905 252.2 676 679 159.5
C 5 112 18372 110.93 676 679 159.5
D 8 195 1143492 6768.87 687 664 168.8
D 1 52 104666 616.0 687 664 168.8
D 9 1 90159 530.07 687 664 168.8

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