ASTROSAT CZTI

Data Quality Report

Orbit 36873

Creation date: 2024-06-27T21:32:38.954950
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/AS1A11_075T01_9000005244_36873cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36873cztM0_level2_quad_clean.evt
Size (bytes)250,539,84033,704,640
Size238.9 MB 32.1 MB
Events in quadrant A2,022,343246,561
Events in quadrant B638,6154,241
Events in quadrant C2,019,503254,994
Events in quadrant D2,624,517225,867

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0895
B0895
C0908
D0908

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09237674
B04484253
C09184619
D011676919

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4049240.592739%
B41314131100.000000%
C407170.171948%
D40472686.622189%

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 5850 4127 8 8 0.14% 0.19%
B 5867 4130 0 0 0.00% 0.00%
C 5877 4160 6 6 0.10% 0.14%
D 5827 4126 215 215 3.69% 5.21%

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 153026 1646.3 453 444 92.7
A 9 143 57204 612.42 453 444 92.7
A 13 248 32850 349.65 453 444 92.7
B 12 243 571390 157232.81 9 9 3.6
B 12 144 10820 2974.97 9 9 3.6
B 4 232 4078 1119.71 9 9 3.6
C 15 214 174601 1689.9 442 445 103.1
C 0 239 37456 359.13 442 445 103.1
C 0 10 34677 332.17 442 445 103.1
D 2 249 639875 6139.33 426 414 104.2
D 12 233 91597 875.43 426 414 104.2
D 2 250 55004 524.11 426 414 104.2

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