ASTROSAT CZTI

Data Quality Report

Orbit 33337

Creation date: 2024-06-27T20:48:01.457964
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/AS1A10_090T11_9000004784_33337cztM0_level2.evt modeM0/AS1A10_090T11_9000004784_33337cztM0_level2_quad_clean.evt
Size (bytes)616,014,72097,577,280
Size587.5 MB 93.1 MB
Events in quadrant A2,742,697697,567
Events in quadrant B4,533,748666,443
Events in quadrant C4,062,800665,244
Events in quadrant D6,981,326576,662

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111803
B0169902
C0152482
D0243172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4967290.583853%
B496755511.173747%
C49673497.026374%
D4967106621.461647%

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 7090 4968 22 22 0.31% 0.44%
B 7090 4968 326 326 4.60% 6.56%
C 7090 4968 313 313 4.41% 6.30%
D 7090 4968 1033 1033 14.57% 20.79%

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 0 254 94590 697.17 682 673 134.7
A 15 169 8568 58.61 682 673 134.7
A 13 254 7379 49.78 682 673 134.7
B 0 219 968482 7980.18 648 635 121.3
B 5 172 722017 5948.0 648 635 121.3
B 4 170 192241 1579.85 648 635 121.3
C 1 23 1217282 8408.02 633 640 144.7
C 15 214 232005 1598.93 633 640 144.7
C 0 10 105950 727.78 633 640 144.7
D 8 195 1597654 9910.4 592 584 161.2
D 2 250 1330206 8250.79 592 584 161.2
D 1 52 482717 2991.81 592 584 161.2

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