ASTROSAT CZTI

Data Quality Report

Orbit 39415

Creation date: 2024-06-27T22:04:16.166978
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/AS1T05_074T01_9000005472_39415cztM0_level2.fits modeM0/AS1T05_074T01_9000005472_39415cztM0_level2_quad_clean.evt
Size (bytes)536,976,00083,381,760
Size512.1 MB 79.5 MB
Events in quadrant A3,222,699599,114
Events in quadrant B4,197,720548,424
Events in quadrant C4,582,177567,542
Events in quadrant D7,469,072442,599

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129083
B0160562
C0170072
D0259022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5234881.681314%
B523464312.285059%
C52343526.725258%
D5234116822.315629%

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 7056 5235 70 70 0.99% 1.34%
B 7056 5235 592 592 8.39% 11.31%
C 7056 5235 337 337 4.78% 6.44%
D 7056 5235 1124 1124 15.93% 21.47%

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 439224 3781.71 575 563 116.0
A 15 222 331981 2857.16 575 563 116.0
A 13 248 183716 1578.97 575 563 116.0
B 6 203 1751907 16623.26 541 526 105.4
B 5 172 256529 2429.86 541 526 105.4
B 5 255 49910 468.73 541 526 105.4
C 15 208 2085391 16023.66 557 562 130.1
C 15 214 216119 1656.74 557 562 130.1
C 14 254 49720 377.82 557 562 130.1
D 12 235 3310719 26732.7 511 496 123.8
D 12 0 1039155 8388.0 511 496 123.8
D 12 227 525304 4238.25 511 496 123.8

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