ASTROSAT CZTI

Data Quality Report

Orbit 39998

Creation date: 2024-06-27T22:11:05.041054
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_39998cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39998cztM0_level2_quad_clean.evt
Size (bytes)316,327,68090,302,400
Size301.7 MB 86.1 MB
Events in quadrant A2,841,472608,161
Events in quadrant B2,471,147636,397
Events in quadrant C2,477,835602,721
Events in quadrant D3,520,081528,642

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114863
B0107242
C0104712
D0140242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5117420.820793%
B5117180.351769%
C5117110.214970%
D51172715.296072%

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 7270 5118 31 31 0.43% 0.61%
B 7270 5118 9 9 0.12% 0.18%
C 7270 5118 8 8 0.11% 0.16%
D 7270 5118 244 244 3.36% 4.77%

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 462336 3854.02 582 571 119.8
A 13 248 104625 868.46 582 571 119.8
A 12 189 15359 123.42 582 571 119.8
B 4 171 132727 1194.99 579 565 110.6
B 4 170 25901 229.08 579 565 110.6
B 15 85 14632 127.19 579 565 110.6
C 15 214 216185 1631.2 566 571 132.2
C 0 10 38079 283.76 566 571 132.2
C 15 208 7533 52.67 566 571 132.2
D 2 250 747841 5502.09 552 536 135.8
D 12 227 358827 2637.95 552 536 135.8
D 13 249 117259 859.38 552 536 135.8

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