ASTROSAT CZTI

Data Quality Report

Orbit 42752

Creation date: 2024-06-27T22:43:49.869332
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/AS1A05_013T01_9000005822_42752cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42752cztM0_level2_quad_clean.evt
Size (bytes)368,922,24089,841,600
Size351.8 MB 85.7 MB
Events in quadrant A3,572,620606,908
Events in quadrant B2,904,211605,474
Events in quadrant C4,000,707584,146
Events in quadrant D2,767,166553,470

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137492
B0122002
C0154382
D0119722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52901182.230624%
B52902184.120983%
C52901893.572779%
D5290551.039698%

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 7293 5291 91 91 1.25% 1.72%
B 7293 5291 169 169 2.32% 3.19%
C 7293 5291 189 189 2.59% 3.57%
D 7293 5291 54 54 0.74% 1.02%

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 577125 4711.21 597 584 122.4
A 13 248 390848 3189.04 597 584 122.4
A 7 3 220250 1795.0 597 584 122.4
B 5 172 562212 4930.03 584 567 113.9
B 15 85 19659 167.59 584 567 113.9
B 0 245 18497 157.39 584 567 113.9
C 0 239 1098441 8129.09 580 585 135.1
C 14 254 407230 3011.01 580 585 135.1
C 15 214 218513 1613.65 580 585 135.1
D 2 249 308364 2155.21 588 572 142.8
D 12 6 122930 856.77 588 572 142.8
D 2 234 29180 200.32 588 572 142.8

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