ASTROSAT CZTI

Data Quality Report

Orbit 25447

Creation date: 2024-06-27T19:17:46.244950
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/AS1A09_085T02_9000003716_25447cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25447cztM0_level2_quad_clean.evt
Size (bytes)541,221,120125,003,520
Size516.1 MB 119.2 MB
Events in quadrant A3,449,515867,578
Events in quadrant B3,292,630866,699
Events in quadrant C3,439,549828,018
Events in quadrant D5,795,956797,700

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142980
B0134790
C0140900
D0215140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6098771.262709%
B60991061.737990%
C60991612.639777%
D60983315.428009%

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 7434 6100 0 0 0.00% 0.00%
B 7435 6101 2 2 0.03% 0.03%
C 7435 6101 6 6 0.08% 0.10%
D 7434 6100 254 254 3.42% 4.16%

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 6 16 130037 753.64 860 848 171.4
A 13 254 8405 44.08 860 848 171.4
A 0 226 7545 39.07 860 848 171.4
B 12 111 18019 109.89 834 813 156.6
B 11 111 16491 100.13 834 813 156.6
B 14 111 15269 92.32 834 813 156.6
C 14 238 133728 701.89 816 825 189.3
C 9 54 115775 607.08 816 825 189.3
C 13 61 5524 24.82 816 825 189.3
D 1 52 2311251 11698.71 828 808 197.5
D 8 195 156560 788.64 828 808 197.5
D 7 238 112535 565.72 828 808 197.5

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