ASTROSAT CZTI

Data Quality Report

Orbit 45705

Creation date: 2024-06-27T23:15:13.654860
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_028T01_9000006122_45705cztM0_level2.fits modeM0/AS1A13_028T01_9000006122_45705cztM0_level2_quad_clean.evt
Size (bytes)1,799,982,720411,050,880
Size1.7 GB 392.0 MB
Events in quadrant A21,650,8552,761,916
Events in quadrant B12,811,0922,854,986
Events in quadrant C11,970,4272,761,722
Events in quadrant D18,270,0092,350,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05100
B05100
C05100
D05100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0805416
B0546675
C0529325
D0712025

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A249535902.364445%
B249535052.023805%
C249533351.342524%
D2495320228.103234%

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 29753 24953 25 25 0.08% 0.10%
B 29753 24954 198 198 0.67% 0.79%
C 29753 24954 166 166 0.56% 0.67%
D 29753 24953 1683 1683 5.66% 6.74%

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 10381212 17677.0 2868 2810 587.1
A 13 248 96362 159.34 2868 2810 587.1
A 13 254 40230 63.74 2868 2810 587.1
B 5 172 823966 1481.26 2855 2769 554.4
B 0 189 153562 272.0 2855 2769 554.4
B 3 112 109943 193.32 2855 2769 554.4
C 12 2 613771 923.6 2840 2857 661.5
C 0 207 112604 165.92 2840 2857 661.5
C 1 3 88479 129.45 2840 2857 661.5
D 13 249 2996821 4356.67 2739 2656 687.3
D 1 52 2565265 3728.73 2739 2656 687.3
D 2 249 1560981 2267.45 2739 2656 687.3

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