ASTROSAT CZTI

Data Quality Report

Orbit 20230403_A12_012T01_9000005554_level2

Creation date: 2023-04-04T11:10:12.750584
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/AS1A12_012T01_9000005554cztM0_level2.fits modeM0/AS1A12_012T01_9000005554cztM0_level2_quad_clean.evt
Size (bytes)110,753,280135,365,760
Size105.6 MB 129.1 MB
Events in quadrant A662,500852,452
Events in quadrant B636,144853,517
Events in quadrant C655,548849,864
Events in quadrant D497,800641,986

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280570
B0298270
C0273270
D0368590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13044410.314321%
B130441411.080957%
C13044810.620975%
D13044252319.342226%

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 17041 13039 0 0 0.00% 0.00%
B 17041 13044 0 0 0.00% 0.00%
C 17041 13042 0 0 0.00% 0.00%
D 17040 12958 0 0 0.00% 0.00%

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 9 19 579 9.11 172 162 45.8
A 0 29 567 8.85 172 162 45.8
A 7 110 541 8.28 172 162 45.8
B 2 9 533 10.81 168 160 34.5
B 3 17 475 9.13 168 160 34.5
B 2 8 472 9.04 168 160 34.5
C 1 81 553 8.46 173 161 46.4
C 1 80 551 8.41 173 161 46.4
C 3 203 537 8.11 173 161 46.4
D 10 189 390 5.91 144 131 43.9
D 10 113 387 5.84 144 131 43.9
D 7 3 387 5.84 144 131 43.9

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