ASTROSAT CZTI

Data Quality Report

Orbit 17269

Creation date: 2024-06-27T17:34:19.446839
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_059T01_9000002554_17269cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17269cztM0_level2_quad_clean.evt
Size (bytes)663,842,88089,161,920
Size633.1 MB 85.0 MB
Events in quadrant A4,349,854600,246
Events in quadrant B3,227,496623,070
Events in quadrant C3,152,668577,969
Events in quadrant D8,930,423440,379

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172092
B0137632
C0136402
D0309802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65593194.863546%
B6558620.945410%
C6558841.280878%
D6558191229.155230%

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 7774 6560 189 189 2.43% 2.88%
B 7773 6559 1 1 0.01% 0.02%
C 7773 6559 0 0 0.00% 0.00%
D 7773 6559 1810 1810 23.29% 27.60%

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 14 235 1235650 7583.45 806 791 162.8
A 0 23 10723 60.99 806 791 162.8
A 0 226 7744 42.7 806 791 162.8
B 12 111 18424 112.3 820 801 156.9
B 11 111 15995 96.82 820 801 156.9
B 14 111 13940 83.73 820 801 156.9
C 14 238 121037 667.61 772 779 180.1
C 3 233 21269 113.75 772 779 180.1
C 13 61 5415 25.74 772 779 180.1
D 11 176 5873682 35328.29 686 666 166.2
D 10 70 173718 1040.97 686 666 166.2
D 2 33 101761 608.12 686 666 166.2

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