ASTROSAT CZTI

Data Quality Report

Orbit 39733

Creation date: 2024-06-27T22:08:20.276612
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_022T01_9000005494_39733cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39733cztM0_level2_quad_clean.evt
Size (bytes)372,447,36091,175,040
Size355.2 MB 87.0 MB
Events in quadrant A3,273,493614,560
Events in quadrant B2,818,272633,150
Events in quadrant C3,418,113593,945
Events in quadrant D3,852,065536,636

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129763
B0119372
C0136762
D0152242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54631222.233205%
B5463751.372872%
C5463551.006773%
D54632564.686070%

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 7195 5464 80 80 1.11% 1.46%
B 7195 5464 37 37 0.51% 0.68%
C 7195 5464 39 39 0.54% 0.71%
D 7195 5464 211 211 2.93% 3.86%

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 444468 3572.95 609 598 124.2
A 15 174 299792 2408.37 609 598 124.2
A 9 143 165906 1330.65 609 598 124.2
B 5 172 341153 2888.95 604 587 117.9
B 5 255 35610 297.09 604 587 117.9
B 4 170 24618 203.85 604 587 117.9
C 15 208 569240 4130.52 589 592 137.7
C 9 187 253985 1840.58 589 592 137.7
C 15 214 240691 1744.02 589 592 137.7
D 12 227 1067850 7387.77 584 567 144.5
D 12 233 261249 1804.45 584 567 144.5
D 13 249 136105 938.2 584 567 144.5

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