ASTROSAT CZTI

Data Quality Report

Orbit 04326

Creation date: 2024-06-27T14:40:25.132364
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/AS1G05_219T01_9000000540_04326cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04326cztM0_level2_quad_clean.evt
Size (bytes)811,774,08073,028,160
Size774.2 MB 69.6 MB
Events in quadrant A3,263,180515,815
Events in quadrant B14,637,230261,412
Events in quadrant C3,062,466502,412
Events in quadrant D3,194,546489,313

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134792
B0477781
C0132661
D0135991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6304791.253173%
B6304527283.629442%
C6304510.809010%
D6304651.031091%

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 7524 6304 2 2 0.03% 0.03%
B 7523 6303 4884 4884 64.92% 77.49%
C 7524 6304 0 0 0.00% 0.00%
D 7523 6303 9 9 0.12% 0.14%

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 14 111 88103 537.53 796 781 162.5
A 13 251 36569 220.3 796 781 162.5
A 13 14 34909 210.08 796 781 162.5
B 3 0 12578921 131338.67 503 492 95.8
B 8 3 42566 439.32 503 492 95.8
B 14 167 42172 435.21 503 492 95.8
C 9 247 90679 509.49 760 766 176.5
C 13 61 6373 31.77 760 766 176.5
C 9 16 4316 20.12 760 766 176.5
D 2 136 85449 464.09 765 744 182.5
D 13 239 51517 278.18 765 744 182.5
D 12 22 30960 165.55 765 744 182.5

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