ASTROSAT CZTI

Data Quality Report

Orbit 37781

Creation date: 2024-06-27T21:44:20.752363
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/AS1A11_106T02_9000005344_37781cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37781cztM0_level2_quad_clean.evt
Size (bytes)364,944,96039,144,960
Size348.0 MB 37.3 MB
Events in quadrant A1,921,844242,714
Events in quadrant B2,201,523238,734
Events in quadrant C1,805,268239,671
Events in quadrant D4,888,556218,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076290
B086390
C071540
D0169000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3462140.404391%
B3462551.588677%
C346220.057770%
D346275221.721548%

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 3462 3462 10 10 0.29% 0.29%
B 3462 3462 41 41 1.18% 1.18%
C 3462 3462 2 2 0.06% 0.06%
D 3462 3462 891 891 25.74% 25.74%

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 10 83 183427 2123.2 429 421 86.2
A 15 222 23897 272.36 429 421 86.2
A 9 143 14683 165.47 429 421 86.2
B 0 189 179654 2279.27 414 405 78.6
B 4 81 99013 1253.87 414 405 78.6
B 0 229 87354 1105.61 414 405 78.6
C 15 214 159910 1673.42 412 416 95.3
C 1 23 17689 181.22 412 416 95.3
C 15 159 5508 53.42 412 416 95.3
D 12 235 2930890 30043.1 400 389 97.5
D 7 223 78462 800.39 400 389 97.5
D 2 250 60378 615.0 400 389 97.5

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