ASTROSAT CZTI

Data Quality Report

Orbit 09794

Creation date: 2024-06-27T15:50:45.027232
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_218T01_9000001394_09794cztM0_level2.evt modeM0/AS1G05_218T01_9000001394_09794cztM0_level2_quad_clean.evt
Size (bytes)1,948,472,640364,181,760
Size1.8 GB 347.3 MB
Events in quadrant A12,913,7952,305,144
Events in quadrant B13,323,4142,339,738
Events in quadrant C12,672,2792,285,047
Events in quadrant D18,197,6052,164,525

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05720
B05720
C05720
D05720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05786231
B05868523
C05748032
D07366061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A281642500.887658%
B281682891.025987%
C281631820.646238%
D2816511734.164743%

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 31930 28180 60 60 0.19% 0.21%
B 31930 28180 13 13 0.04% 0.05%
C 31930 28180 14 14 0.04% 0.05%
D 31930 28180 886 886 2.77% 3.14%

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 12 210 227341 336.58 3293 3224 665.9
A 0 226 30113 40.38 3293 3224 665.9
A 12 194 27213 36.03 3293 3224 665.9
B 4 239 168421 262.43 3310 3233 629.5
B 0 214 106050 163.34 3310 3233 629.5
B 12 111 71622 108.65 3310 3233 629.5
C 14 234 83756 108.81 3211 3224 740.1
C 5 128 27061 32.21 3211 3224 740.1
C 13 61 23705 27.67 3211 3224 740.1
D 1 52 3080189 3937.67 3145 3068 781.5
D 2 152 990115 1263.09 3145 3068 781.5
D 12 233 972961 1241.13 3145 3068 781.5

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