ASTROSAT CZTI

Data Quality Report

Orbit 18901

Creation date: 2024-06-27T17:56:17.994914
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_163T01_9000002820_18901cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18901cztM0_level2_quad_clean.evt
Size (bytes)583,335,36098,925,120
Size556.3 MB 94.3 MB
Events in quadrant A5,677,493552,399
Events in quadrant B4,090,464688,622
Events in quadrant C3,295,983663,212
Events in quadrant D4,148,743624,888

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212972
B0165242
C0140462
D0168772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6686122618.336823%
B66862213.305414%
C6686590.882441%
D66863014.501944%

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 7896 6687 761 761 9.64% 11.38%
B 7896 6687 99 99 1.25% 1.48%
C 7896 6687 0 0 0.00% 0.00%
D 7896 6687 195 195 2.47% 2.92%

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 14 235 2820168 19046.74 735 722 148.0
A 15 174 19711 128.28 735 722 148.0
A 13 254 8232 50.73 735 722 148.0
B 3 112 701188 4414.83 839 820 158.6
B 0 189 45380 280.89 839 820 158.6
B 7 220 20434 123.64 839 820 158.6
C 14 238 127225 676.95 806 815 186.7
C 3 233 25467 132.02 806 815 186.7
C 13 61 5784 26.61 806 815 186.7
D 1 52 742282 3847.14 796 775 192.7
D 7 238 330690 1711.69 796 775 192.7
D 12 110 30772 155.63 796 775 192.7

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