ASTROSAT CZTI

Data Quality Report

Orbit 17334

Creation date: 2024-06-27T17:35:06.848737
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/AS1A05_169T01_9000002558_17334cztM0_level2.evt modeM0/AS1A05_169T01_9000002558_17334cztM0_level2_quad_clean.evt
Size (bytes)1,198,995,840222,125,760
Size1.1 GB 211.8 MB
Events in quadrant A8,497,5361,395,698
Events in quadrant B8,695,8341,400,222
Events in quadrant C8,695,9861,326,487
Events in quadrant D9,164,1801,324,071

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378704
B0381254
C0379905
D0401154

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185941881.011079%
B185942451.317629%
C185943101.667204%
D185942441.312251%

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 20749 18597 0 0 0.00% 0.00%
B 20749 18597 1 1 0.00% 0.01%
C 20749 18597 2 2 0.01% 0.01%
D 20749 18597 77 77 0.37% 0.41%

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 15 31 23637 48.33 2206 2157 444.4
A 0 226 18810 37.47 2206 2157 444.4
A 3 137 17377 34.25 2206 2157 444.4
B 4 173 98051 227.87 2191 2127 421.0
B 12 111 53487 122.01 2191 2127 421.0
B 11 111 47473 107.72 2191 2127 421.0
C 14 238 324507 647.86 2122 2131 497.6
C 3 233 63380 123.09 2122 2131 497.6
C 9 54 42258 80.64 2122 2131 497.6
D 5 222 796854 1530.35 2145 2081 519.3
D 2 152 149254 283.38 2145 2081 519.3
D 2 234 64317 119.84 2145 2081 519.3

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