ASTROSAT CZTI

Data Quality Report

Orbit 24805

Creation date: 2024-06-27T19:10:04.924921
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/AS1T03_197T01_9000003626_24805cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24805cztM0_level2_quad_clean.evt
Size (bytes)468,282,24097,464,960
Size446.6 MB 92.9 MB
Events in quadrant A3,198,564627,391
Events in quadrant B3,275,121639,430
Events in quadrant C3,492,415615,765
Events in quadrant D3,755,995597,537

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139803
B0141042
C0147862
D0157822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6771390.575986%
B6772660.974601%
C67722002.953337%
D6772650.959835%

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 8711 6773 0 0 0.00% 0.00%
B 8712 6774 1 1 0.01% 0.01%
C 8712 6774 79 79 0.91% 1.17%
D 8712 6774 42 42 0.48% 0.62%

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 13 254 10528 58.23 828 810 166.9
A 3 137 7529 40.26 828 810 166.9
A 0 226 6970 36.91 828 810 166.9
B 12 111 19589 118.29 826 805 158.8
B 11 111 17813 107.11 826 805 158.8
B 14 111 16330 97.77 826 805 158.8
C 2 16 285959 1541.94 789 792 184.9
C 14 238 127050 682.69 789 792 184.9
C 13 61 5526 25.59 789 792 184.9
D 8 195 505471 2603.94 800 777 193.8
D 1 52 173312 890.18 800 777 193.8
D 2 120 43308 219.44 800 777 193.8

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