ASTROSAT CZTI

Data Quality Report

Orbit 07311

Creation date: 2024-06-27T15:18:20.761402
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/AS1G06_137T02_9000001002_07311cztM0_level2.evt modeM0/AS1G06_137T02_9000001002_07311cztM0_level2_quad_clean.evt
Size (bytes)483,428,16091,624,320
Size461.0 MB 87.4 MB
Events in quadrant A3,440,777572,253
Events in quadrant B3,360,075593,536
Events in quadrant C3,058,470584,699
Events in quadrant D4,317,051547,640

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149423
B0147582
C0140392
D0174792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6841360.526239%
B6841560.818594%
C6841170.248502%
D6841610.891683%

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 7926 6842 2 2 0.03% 0.03%
B 7926 6842 6 6 0.08% 0.09%
C 7926 6842 0 0 0.00% 0.00%
D 7926 6842 42 42 0.53% 0.61%

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 15 267954 1638.81 801 785 163.0
A 13 170 61522 372.56 801 785 163.0
A 14 111 15493 90.22 801 785 163.0
B 4 81 125684 803.22 815 797 155.5
B 0 214 43590 275.23 815 797 155.5
B 11 51 23567 146.45 815 797 155.5
C 13 61 6092 29.01 783 788 182.8
C 10 22 3933 17.2 783 788 182.8
C 1 16 2194 7.69 783 788 182.8
D 1 20 945615 4933.51 773 748 191.5
D 2 216 297378 1548.82 773 748 191.5
D 12 233 62131 320.5 773 748 191.5

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