ASTROSAT CZTI

Data Quality Report

Orbit 41720

Creation date: 2024-06-27T22:32:00.046052
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/AS1A12_077T12_9000005692_41720cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41720cztM0_level2_quad_clean.evt
Size (bytes)447,687,36088,485,120
Size426.9 MB 84.4 MB
Events in quadrant A3,058,346640,984
Events in quadrant B2,454,860656,719
Events in quadrant C2,914,866596,706
Events in quadrant D7,740,701421,886

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121701
B0105011
C0115591
D0265001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5182450.868391%
B518390.173645%
C51831382.662551%
D5183162931.429674%

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 7215 5183 32 32 0.44% 0.62%
B 7216 5184 0 0 0.00% 0.00%
C 7216 5184 132 132 1.83% 2.55%
D 7216 5184 1745 1745 24.18% 33.66%

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 473792 3703.79 623 612 127.8
A 15 223 123993 965.76 623 612 127.8
A 7 3 39360 303.3 623 612 127.8
B 15 35 30485 253.94 612 597 117.7
B 12 111 14585 118.85 612 597 117.7
B 11 111 13919 113.19 612 597 117.7
C 0 10 382843 2752.47 590 594 138.9
C 15 214 209487 1504.18 590 594 138.9
C 15 159 15190 105.1 590 594 138.9
D 12 79 4046738 31213.59 536 522 129.6
D 13 249 885583 6827.6 536 522 129.6
D 2 249 669486 5160.57 536 522 129.6

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