ASTROSAT CZTI

Data Quality Report

Orbit 42868

Creation date: 2024-06-27T22:45:11.407892
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_138T01_9000005828_42868cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42868cztM0_level2_quad_clean.evt
Size (bytes)322,142,40082,699,200
Size307.2 MB 78.9 MB
Events in quadrant A2,889,614549,291
Events in quadrant B2,343,311570,203
Events in quadrant C2,518,056553,723
Events in quadrant D3,781,137477,801

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116572
B0105292
C0107072
D0147332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5035511.012910%
B5035190.377358%
C5035180.357498%
D50353506.951341%

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 7008 5036 34 34 0.49% 0.68%
B 7008 5036 9 9 0.13% 0.18%
C 7008 5036 15 15 0.21% 0.30%
D 7008 5036 338 338 4.82% 6.71%

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 530133 4720.48 542 531 112.2
A 15 237 120214 1066.77 542 531 112.2
A 12 189 77616 687.08 542 531 112.2
B 0 245 47513 440.45 546 531 106.7
B 5 172 36143 333.86 546 531 106.7
B 5 255 32904 303.49 546 531 106.7
C 15 214 203977 1599.57 538 541 127.2
C 0 207 140519 1100.62 538 541 127.2
C 14 254 44221 343.45 538 541 127.2
D 12 6 1085262 8447.36 516 501 128.4
D 2 249 411980 3204.31 516 501 128.4
D 13 249 77090 596.42 516 501 128.4

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