ASTROSAT CZTI

Data Quality Report

Orbit 41156

Creation date: 2024-06-27T22:25:09.810580
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_025T12_9000005604_41156cztM0_level2.fits modeM0/AS1A12_025T12_9000005604_41156cztM0_level2_quad_clean.evt
Size (bytes)186,246,72054,362,880
Size177.6 MB 51.8 MB
Events in quadrant A1,647,929376,252
Events in quadrant B1,484,085388,655
Events in quadrant C1,838,831350,848
Events in quadrant D1,698,080326,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064991
B060451
C071611
D068081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A287150.174155%
B2871100.348311%
C2871582.020202%
D2871752.612330%

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 2871 2871 1 1 0.03% 0.03%
B 2871 2871 5 5 0.17% 0.17%
C 2871 2871 56 56 1.95% 1.95%
D 2871 2871 64 64 2.23% 2.23%

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 263800 3590.87 357 352 73.4
A 13 254 4673 58.9 357 352 73.4
A 3 137 3840 47.54 357 352 73.4
B 0 245 45724 665.3 350 343 68.2
B 5 255 30988 449.26 350 343 68.2
B 0 190 28389 411.16 350 343 68.2
C 9 54 276768 3529.56 338 341 78.3
C 15 214 123731 1575.5 338 341 78.3
C 0 10 111695 1421.82 338 341 78.3
D 2 249 236447 2800.11 343 334 84.3
D 2 16 116000 1371.7 343 334 84.3
D 13 249 38480 452.38 343 334 84.3

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