ASTROSAT CZTI

Data Quality Report

Orbit 11423

Creation date: 2024-06-27T16:12:42.278057
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/AS1A04_024T04_9000001670_11423cztM0_level2.evt modeM0/AS1A04_024T04_9000001670_11423cztM0_level2_quad_clean.evt
Size (bytes)598,060,80093,369,600
Size570.4 MB 89.0 MB
Events in quadrant A4,961,107590,401
Events in quadrant B5,735,860577,843
Events in quadrant C3,159,623597,668
Events in quadrant D3,779,149571,748

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195963
B0218632
C0143282
D0161412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70304997.098151%
B703087812.489331%
C7030110.156472%
D7030971.379801%

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 7615 7031 245 245 3.22% 3.48%
B 7615 7031 456 456 5.99% 6.49%
C 7615 7031 0 0 0.00% 0.00%
D 7615 7031 67 67 0.88% 0.95%

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 8 5 1667656 9956.78 820 803 167.4
A 1 162 28430 165.03 820 803 167.4
A 9 143 24533 141.75 820 803 167.4
B 4 239 1552409 10225.26 800 782 151.7
B 3 64 655334 4313.51 800 782 151.7
B 11 51 126396 827.8 800 782 151.7
C 12 4 7320 35.13 807 811 185.3
C 13 61 5938 27.67 807 811 185.3
C 0 207 5035 22.8 807 811 185.3
D 13 104 202557 1039.3 803 781 194.1
D 2 33 155321 796.0 803 781 194.1
D 2 120 97088 496.05 803 781 194.1

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