ASTROSAT CZTI

Data Quality Report

Orbit 44237

Creation date: 2024-06-27T23:00:50.963821
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/AS1A13_074T03_9000005976_44237cztM0_level2.fits modeM0/AS1A13_074T03_9000005976_44237cztM0_level2_quad_clean.evt
Size (bytes)444,936,960111,519,360
Size424.3 MB 106.4 MB
Events in quadrant A5,382,396731,483
Events in quadrant B3,534,514761,488
Events in quadrant C3,249,162734,137
Events in quadrant D3,764,433666,608

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212702
B0150302
C0146382
D0161882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69442313.326613%
B69441341.929724%
C6944871.252880%
D69442062.966590%

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 7794 6945 33 33 0.42% 0.48%
B 7794 6945 23 23 0.30% 0.33%
C 7794 6945 9 9 0.12% 0.13%
D 7794 6945 111 111 1.42% 1.60%

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 1467927 8961.56 784 765 163.7
A 15 223 749755 4574.9 784 765 163.7
A 10 248 99418 602.58 784 765 163.7
B 0 155 89395 568.88 784 760 155.8
B 5 235 67941 431.18 784 760 155.8
B 0 219 52930 334.84 784 760 155.8
C 2 14 75238 400.31 784 784 186.0
C 14 254 73337 390.09 784 784 186.0
C 4 254 32369 169.82 784 784 186.0
D 13 249 596858 3030.95 775 752 196.7
D 1 52 88615 446.75 775 752 196.7
D 2 249 36237 180.43 775 752 196.7

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