ASTROSAT CZTI

Data Quality Report

Orbit 47536

Creation date: 2024-07-13T13:31:48.738832
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/AS1C09_002T01_9000006334_47536cztM0_level2.fits modeM0/AS1C09_002T01_9000006334_47536cztM0_level2_quad_clean.evt
Size (bytes)475,951,680110,139,840
Size453.9 MB 105.0 MB
Events in quadrant A7,036,794718,264
Events in quadrant B3,189,007753,066
Events in quadrant C2,890,054727,384
Events in quadrant D3,974,005661,873

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254221
B0143211
C0138341
D0165281

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68063294.833970%
B6807831.219333%
C6807170.249743%
D68071301.909799%

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 7401 6807 37 37 0.50% 0.54%
B 7402 6808 14 14 0.19% 0.21%
C 7402 6808 2 2 0.03% 0.03%
D 7402 6808 92 92 1.24% 1.35%

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 3773761 24720.37 736 721 152.6
A 9 191 354158 2315.66 736 721 152.6
A 13 248 50720 327.59 736 721 152.6
B 0 200 74455 506.63 746 723 145.5
B 5 32 58492 396.94 746 723 145.5
B 0 190 51678 350.12 746 723 145.5
C 1 3 15900 88.77 731 735 170.8
C 12 250 12526 69.02 731 735 170.8
C 14 254 8901 47.8 731 735 170.8
D 2 165 503374 2750.69 726 701 182.7
D 4 222 268811 1467.13 726 701 182.7
D 2 249 157769 859.49 726 701 182.7

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