ASTROSAT CZTI

Data Quality Report

Orbit 44542

Creation date: 2024-06-27T23:03:58.066086
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_003T01_9000006002_44542cztM0_level2.fits modeM0/AS1A13_003T01_9000006002_44542cztM0_level2_quad_clean.evt
Size (bytes)504,760,320114,848,640
Size481.4 MB 109.5 MB
Events in quadrant A5,211,712773,365
Events in quadrant B4,085,101786,305
Events in quadrant C3,955,651746,219
Events in quadrant D4,876,418673,244

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214622
B0172372
C0167542
D0196192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71591211.690180%
B71591722.402570%
C71592213.087023%
D71594215.880710%

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 9034 7161 10 10 0.11% 0.14%
B 9034 7161 87 87 0.96% 1.21%
C 9034 7161 190 190 2.10% 2.65%
D 9034 7161 342 342 3.79% 4.78%

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 2022014 12211.6 801 786 165.5
A 13 248 59680 355.82 801 786 165.5
A 10 248 20304 117.92 801 786 165.5
B 5 235 712746 4479.93 796 771 158.9
B 15 36 60728 377.27 796 771 158.9
B 5 172 47929 296.73 796 771 158.9
C 15 208 621174 3386.34 783 786 183.2
C 14 254 155813 846.2 783 786 183.2
C 3 233 111420 603.89 783 786 183.2
D 2 249 646990 3327.24 770 746 194.2
D 1 52 616312 3169.29 770 746 194.2
D 8 240 276809 1421.33 770 746 194.2

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