ASTROSAT CZTI

Data Quality Report

Orbit 29466

Creation date: 2024-06-27T20:04:24.526905
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/AS1A10_102T09_9000004242_29466cztM0_level2.evt modeM0/AS1A10_102T09_9000004242_29466cztM0_level2_quad_clean.evt
Size (bytes)594,826,56058,829,760
Size567.3 MB 56.1 MB
Events in quadrant A2,425,058380,614
Events in quadrant B2,464,280390,670
Events in quadrant C2,922,135364,267
Events in quadrant D9,862,349292,519

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104311
B0104971
C0119031
D0327701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5029430.855041%
B5029521.034003%
C50292384.732551%
D5029250649.830980%

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 6024 5030 1 1 0.02% 0.02%
B 6024 5030 1 1 0.02% 0.02%
C 6024 5030 2 2 0.03% 0.04%
D 6024 5030 2369 2369 39.33% 47.10%

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 0 13 26710 208.52 618 605 125.2
A 14 31 9753 73.07 618 605 125.2
A 13 254 9346 69.82 618 605 125.2
B 0 230 15465 123.9 617 601 120.0
B 12 111 14860 118.85 617 601 120.0
B 0 190 14579 116.51 617 601 120.0
C 3 233 417931 3026.31 583 587 137.9
C 14 238 141686 1023.16 583 587 137.9
C 14 254 69797 501.87 583 587 137.9
D 8 195 7223481 56703.19 521 506 127.4
D 1 52 489553 3839.21 521 506 127.4
D 7 80 72489 565.09 521 506 127.4

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