ASTROSAT CZTI

Data Quality Report

Orbit 34606

Creation date: 2022-02-21T09:51:38.984877
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/AS1C07_014T01_9000004950_34606cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34606cztM0_level2_quad_clean.evt
Size (bytes)552,853,44055,800,000
Size527.2 MB 53.2 MB
Events in quadrant A2,630,915338,944
Events in quadrant B4,278,822334,612
Events in quadrant C3,010,304335,194
Events in quadrant D6,457,454302,093

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110773
B0160482
C0119402
D0230282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540490.166543%
B540455110.196151%
C5404861.591414%
D540456010.362694%

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 7138 5405 3 3 0.04% 0.06%
B 7138 5405 349 349 4.89% 6.46%
C 7138 5405 67 67 0.94% 1.24%
D 7138 5405 485 485 6.79% 8.97%

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 43862 319.94 664 651 135.1
A 9 143 17836 127.24 664 651 135.1
A 13 254 9532 65.76 664 651 135.1
B 5 172 1555173 12665.3 641 626 122.7
B 4 170 167765 1361.73 641 626 122.7
B 12 111 14770 115.23 641 626 122.7
C 15 214 226775 1513.35 640 646 149.4
C 0 10 222649 1485.74 640 646 149.4
C 0 207 31851 208.84 640 646 149.4
D 8 195 2288797 14020.21 609 597 163.2
D 2 250 1171343 7173.37 609 597 163.2
D 7 38 330024 2018.46 609 597 163.2

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