ASTROSAT CZTI

Data Quality Report

Orbit 26143

Creation date: 2024-06-27T19:25:19.273531
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/AS1A09_138T04_9000003776_26143cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26143cztM0_level2_quad_clean.evt
Size (bytes)478,123,200105,828,480
Size456.0 MB 100.9 MB
Events in quadrant A3,488,942690,303
Events in quadrant B3,472,488707,835
Events in quadrant C3,488,348671,018
Events in quadrant D3,577,336670,997

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142460
B0141960
C0143300
D0145690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6667821.229939%
B66671111.664917%
C66681542.309538%
D6668901.349730%

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 7872 6667 0 0 0.00% 0.00%
B 7872 6667 1 1 0.01% 0.01%
C 7873 6668 0 0 0.00% 0.00%
D 7873 6668 33 33 0.42% 0.49%

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 0 13 66586 373.43 888 871 176.0
A 13 254 8836 45.26 888 871 176.0
A 0 226 7819 39.48 888 871 176.0
B 0 230 26261 153.4 875 852 165.6
B 12 111 19446 112.26 875 852 165.6
B 11 111 17737 101.94 875 852 165.6
C 14 238 137801 687.28 852 861 199.2
C 3 233 18540 88.73 852 861 199.2
C 2 16 9766 44.69 852 861 199.2
D 1 52 222886 1069.19 876 858 207.7
D 12 233 28748 134.31 876 858 207.7
D 2 234 26575 123.84 876 858 207.7

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