ASTROSAT CZTI

Data Quality Report

Orbit 39971

Creation date: 2024-06-27T22:10:45.566724
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_054T03_9000005516_39971cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39971cztM0_level2_quad_clean.evt
Size (bytes)373,731,84083,396,160
Size356.4 MB 79.5 MB
Events in quadrant A2,752,871574,940
Events in quadrant B3,006,960580,661
Events in quadrant C2,506,884561,802
Events in quadrant D5,164,751445,285

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111463
B0124032
C0106412
D0188882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5172110.212684%
B51721552.996906%
C5172140.270688%
D517284116.260634%

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 7025 5173 11 11 0.16% 0.21%
B 7025 5173 118 118 1.68% 2.28%
C 7025 5173 15 15 0.21% 0.29%
D 7025 5173 856 856 12.19% 16.55%

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 477224 4031.78 573 562 118.2
A 13 248 31806 264.27 573 562 118.2
A 2 79 17846 146.19 573 562 118.2
B 5 32 540525 4873.68 565 550 110.8
B 4 171 141969 1276.41 565 550 110.8
B 5 255 27351 241.9 565 550 110.8
C 15 214 220485 1661.7 559 562 132.3
C 0 10 76604 574.56 559 562 132.3
C 3 233 13745 99.61 559 562 132.3
D 2 249 908057 7041.3 523 509 128.9
D 12 227 717973 5566.52 523 509 128.9
D 5 32 680268 5273.98 523 509 128.9

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