ASTROSAT CZTI

Data Quality Report

Orbit 47648

Creation date: 2024-07-20T16:16:38.601693
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/AS1A13_071T01_9000006340_47648cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47648cztM0_level2_quad_clean.evt
Size (bytes)478,656,000108,279,360
Size456.5 MB 103.3 MB
Events in quadrant A7,329,682715,888
Events in quadrant B3,810,195714,952
Events in quadrant C2,941,491727,186
Events in quadrant D3,143,157677,116

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265471
B0155771
C0132341
D0136571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63614547.137243%
B63614426.948593%
C6361550.864644%
D6362560.880226%

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 7531 6362 206 206 2.74% 3.24%
B 7531 6362 283 283 3.76% 4.45%
C 7531 6362 13 13 0.17% 0.20%
D 7532 6363 4 4 0.05% 0.06%

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 3506368 23182.07 733 718 151.2
A 9 191 625280 4130.09 733 718 151.2
A 13 248 367452 2425.13 733 718 151.2
B 5 172 925872 6543.21 718 696 141.4
B 0 190 25879 178.1 718 696 141.4
B 12 111 17954 122.06 718 696 141.4
C 14 254 84011 482.83 728 731 172.5
C 1 3 16805 93.19 728 731 172.5
C 13 61 4854 23.9 728 731 172.5
D 8 192 68803 373.66 741 719 182.2
D 7 38 67603 367.07 741 719 182.2
D 2 249 50035 270.66 741 719 182.2

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