ASTROSAT CZTI

Data Quality Report

Orbit 43668

Creation date: 2024-06-27T22:54:19.114857
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/AS1A12_018T01_9000005896_43668cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43668cztM0_level2_quad_clean.evt
Size (bytes)1,202,477,76099,771,840
Size1.1 GB 95.1 MB
Events in quadrant A9,354,317809,485
Events in quadrant B4,397,500820,299
Events in quadrant C19,220,008239,741
Events in quadrant D10,961,428624,139

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330921
B0183381
C0621581
D0378331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75144215.602875%
B75132613.473978%
C7514715395.195635%
D7514239731.900452%

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 7544 7515 78 78 1.03% 1.04%
B 7543 7514 144 144 1.91% 1.92%
C 7544 7515 6426 6426 85.18% 85.51%
D 7544 7515 1969 1969 26.10% 26.20%

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 15 222 4948775 29263.97 820 802 169.1
A 10 83 860723 5085.86 820 802 169.1
A 15 223 112309 659.49 820 802 169.1
B 0 229 262282 1632.8 827 804 160.1
B 4 206 255710 1591.76 827 804 160.1
B 5 235 209975 1306.17 827 804 160.1
C 15 142 16697875 257894.59 270 271 64.7
C 15 158 990081 15287.62 270 271 64.7
C 15 126 138611 2136.66 270 271 64.7
D 12 6 1914248 9510.26 708 692 201.2
D 4 221 1389990 6904.73 708 692 201.2
D 7 80 1319139 6552.6 708 692 201.2

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