ASTROSAT CZTI

Data Quality Report

Orbit 41919

Creation date: 2024-06-27T22:34:29.345295
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_118T01_9000005718_41919cztM0_level2.fits modeM0/AS1T05_118T01_9000005718_41919cztM0_level2_quad_clean.evt
Size (bytes)644,544,00071,372,160
Size614.7 MB 68.1 MB
Events in quadrant A3,202,263575,567
Events in quadrant B2,665,170597,163
Events in quadrant C3,080,489559,950
Events in quadrant D14,487,11546,534

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130363
B0119102
C0126492
D0462842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5448911.670338%
B5448340.624082%
C54482204.038179%
D5448507693.171806%

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 7122 5449 69 69 0.97% 1.27%
B 7122 5449 19 19 0.27% 0.35%
C 7122 5449 217 217 3.05% 3.98%
D 7122 5449 4956 4956 69.59% 90.95%

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 549639 4631.18 578 566 118.6
A 14 24 372004 3132.91 578 566 118.6
A 2 79 20327 166.67 578 566 118.6
B 12 0 142855 1263.28 581 567 112.6
B 5 255 83901 739.87 581 567 112.6
B 0 190 52059 457.16 581 567 112.6
C 0 10 655878 4948.98 558 560 132.4
C 15 214 216037 1627.29 558 560 132.4
C 0 15 33295 247.22 558 560 132.4
D 12 79 13397925 272578.47 191 184 49.2
D 13 249 143823 2922.35 191 184 49.2
D 2 249 76190 1546.35 191 184 49.2

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