ASTROSAT CZTI

Data Quality Report

Orbit 04877

Creation date: 2024-06-27T14:48:19.227085
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/AS1G05_237T01_9000000620_04877cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04877cztM0_level2_quad_clean.evt
Size (bytes)205,747,20026,879,040
Size196.2 MB 25.6 MB
Events in quadrant A1,376,717159,099
Events in quadrant B1,509,098160,268
Events in quadrant C1,304,337159,944
Events in quadrant D1,866,525151,837

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055822
B060481
C053921
D072081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2540823.228346%
B2540913.582677%
C2540552.165354%
D25402278.937008%

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 3815 2540 2 2 0.05% 0.08%
B 3815 2540 8 8 0.21% 0.31%
C 3815 2540 0 0 0.00% 0.00%
D 3815 2540 139 139 3.64% 5.47%

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 13 251 47593 666.54 345 338 70.9
A 0 226 3492 44.49 345 338 70.9
A 12 194 3426 43.56 345 338 70.9
B 10 16 47196 696.79 347 340 67.2
B 15 204 42741 630.54 347 340 67.2
B 4 80 36914 543.89 347 340 67.2
C 13 61 2836 32.12 333 335 77.9
C 12 4 2215 24.15 333 335 77.9
C 5 207 1487 14.8 333 335 77.9
D 12 233 349336 4291.18 326 316 81.3
D 2 234 115887 1420.94 326 316 81.3
D 13 235 48977 598.28 326 316 81.3

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