ASTROSAT CZTI

Data Quality Report

Orbit 45283

Creation date: 2024-06-27T23:11:54.824380
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/AS1A13_024T03_9000006064_45283cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45283cztM0_level2_quad_clean.evt
Size (bytes)485,357,760107,553,600
Size462.9 MB 102.6 MB
Events in quadrant A5,652,769712,828
Events in quadrant B3,333,495752,170
Events in quadrant C3,194,236718,205
Events in quadrant D5,280,786619,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217232
B0142452
C0141052
D0203912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65082844.363860%
B65081291.982176%
C65081111.705593%
D65084997.667486%

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 8578 6508 39 39 0.45% 0.60%
B 8578 6508 36 36 0.42% 0.55%
C 8578 6508 45 45 0.52% 0.69%
D 8578 6508 290 290 3.38% 4.46%

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 10 83 2666546 17020.36 746 729 156.6
A 13 248 66212 418.09 746 729 156.6
A 15 174 24745 153.33 746 729 156.6
B 5 32 177829 1183.6 755 731 149.6
B 0 189 51987 342.56 755 731 149.6
B 0 183 48019 316.04 755 731 149.6
C 14 254 219067 1255.57 742 745 173.9
C 3 233 40647 229.48 742 745 173.9
C 12 2 28332 158.65 742 745 173.9
D 12 33 1106655 6136.82 722 702 180.2
D 2 249 366277 2028.54 722 702 180.2
D 5 222 299219 1656.44 722 702 180.2

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