ASTROSAT CZTI

Data Quality Report

Orbit 20250421_A13_090T01_9000006464_level2

Creation date: 2025-04-30T01:20:15.996062
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_090T01_9000006464cztM0_level2.fits modeM0/AS1A13_090T01_9000006464cztM0_level2_quad_clean.evt
Size (bytes)4,335,693,1201,371,741,120
Size4.0 GB 1.3 GB
Events in quadrant A26,113,9161,283,272
Events in quadrant B24,028,4901,326,966
Events in quadrant C25,384,0981,178,664
Events in quadrant D18,750,848826,065

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06170
B06170
C06170
D06170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109190
B0109190
C0109250
D0109180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016121490
B017652150
C015365930
D025427850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A538723336836.252378%
B5386416798912.622322%
C538724343916.383788%
D53850416780331.160957%

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 602941 538381 0 0 0.00% 0.00%
B 602942 537617 0 0 0.00% 0.00%
C 602942 538054 0 0 0.00% 0.00%
D 602942 526777 0 0 0.00% 0.00%

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 14 188 27410 9.37 6895 6362 2245.8
A 9 255 25995 8.74 6895 6362 2245.8
A 14 95 21813 6.88 6895 6362 2245.8
B 3 25 19740 9.07 6401 6026 1512.8
B 9 173 19324 8.79 6401 6026 1512.8
B 3 17 19195 8.71 6401 6026 1512.8
C 15 175 20891 6.39 6828 6214 2295.5
C 15 127 20570 6.25 6828 6214 2295.5
C 2 31 20270 6.12 6828 6214 2295.5
D 6 218 23858 10.61 5386 4787 1797.3
D 3 30 18215 7.47 5386 4787 1797.3
D 15 11 17063 6.83 5386 4787 1797.3

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