ASTROSAT CZTI

Data Quality Report

Orbit 36927

Creation date: 2024-06-27T21:33:16.683592
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/AS1C07_010T01_9000005246_36927cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36927cztM0_level2_quad_clean.evt
Size (bytes)385,727,04072,927,360
Size367.9 MB 69.5 MB
Events in quadrant A2,371,819479,103
Events in quadrant B2,585,629493,142
Events in quadrant C2,549,442481,592
Events in quadrant D3,857,139426,261

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098101
B0105811
C0101731
D0144181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4674100.213950%
B4674310.663243%
C4674380.813008%
D467447210.098417%

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 8831 4676 2 2 0.02% 0.04%
B 8831 4676 14 14 0.16% 0.30%
C 8831 4676 29 29 0.33% 0.62%
D 8831 4676 452 452 5.12% 9.67%

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 158965 1376.53 568 557 115.1
A 13 6 13805 115.12 568 557 115.1
A 13 254 7155 57.34 568 557 115.1
B 0 213 133375 1234.96 567 553 107.6
B 5 172 65390 602.84 567 553 107.6
B 5 255 54266 499.42 567 553 107.6
C 15 214 194471 1491.02 561 567 130.0
C 0 10 127580 976.66 561 567 130.0
C 0 207 36664 277.57 561 567 130.0
D 12 17 1348105 10139.87 538 523 132.9
D 2 153 152926 1146.76 538 523 132.9
D 12 233 114715 859.24 538 523 132.9

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