ASTROSAT CZTI

Data Quality Report

Orbit 33245

Creation date: 2024-06-27T20:46:34.976697
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_046T01_9000004776_33245cztM0_level2.evt modeM0/AS1A11_046T01_9000004776_33245cztM0_level2_quad_clean.evt
Size (bytes)706,547,52097,986,240
Size673.8 MB 93.4 MB
Events in quadrant A8,743,306566,132
Events in quadrant B4,242,774683,891
Events in quadrant C2,636,395699,317
Events in quadrant D5,405,243633,221

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297193
B0161322
C0115232
D0199102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5473270749.460990%
B54735239.556002%
C5473380.694318%
D54735359.775260%

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 7176 5474 2224 2224 30.99% 40.63%
B 7176 5474 365 365 5.09% 6.67%
C 7176 5474 29 29 0.40% 0.53%
D 7176 5474 412 412 5.74% 7.53%

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 15 169 6674019 62983.88 530 520 106.0
A 13 6 12567 113.7 530 520 106.0
A 13 254 7855 69.23 530 520 106.0
B 5 172 1348507 11657.81 610 596 115.6
B 4 170 308835 2665.9 610 596 115.6
B 15 85 46651 398.32 610 596 115.6
C 0 10 139478 996.16 608 611 139.4
C 3 233 42127 297.81 608 611 139.4
C 14 254 22029 153.64 608 611 139.4
D 8 195 1620313 11260.0 589 572 143.8
D 12 3 580706 4032.93 589 572 143.8
D 12 218 358703 2489.63 589 572 143.8

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