ASTROSAT CZTI

Data Quality Report

Orbit 37678

Creation date: 2024-06-27T21:43:00.120221
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/AS1A11_075T01_9000005342_37678cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37678cztM0_level2_quad_clean.evt
Size (bytes)462,951,36066,873,600
Size441.5 MB 63.8 MB
Events in quadrant A3,283,573421,602
Events in quadrant B3,397,948417,786
Events in quadrant C2,865,513424,733
Events in quadrant D4,117,320392,682

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131273
B0135062
C0115452
D0156872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5249420.800152%
B52492023.848352%
C5249290.552486%
D52492504.762812%

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 7162 5250 17 17 0.24% 0.32%
B 7161 5248 160 160 2.23% 3.05%
C 7161 5248 24 24 0.34% 0.46%
D 7161 5248 250 250 3.49% 4.76%

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 322008 2452.93 658 647 131.0
A 9 143 142402 1082.01 658 647 131.0
A 6 10 137028 1040.99 658 647 131.0
B 5 172 642878 5261.14 647 630 122.1
B 15 85 89032 724.16 647 630 122.1
B 0 230 40747 328.63 647 630 122.1
C 15 214 242097 1620.05 644 651 149.0
C 0 10 104890 699.42 644 651 149.0
C 6 255 4615 26.6 644 651 149.0
D 12 227 1395026 9061.69 638 622 153.9
D 2 249 103674 669.69 638 622 153.9
D 13 249 36150 230.88 638 622 153.9

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