ASTROSAT CZTI

Data Quality Report

Orbit 23809

Creation date: 2024-06-27T18:58:58.198606
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/AS1A07_113T01_9000003526_23809cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23809cztM0_level2_quad_clean.evt
Size (bytes)608,086,08066,911,040
Size579.9 MB 63.8 MB
Events in quadrant A3,251,046405,351
Events in quadrant B3,411,974413,199
Events in quadrant C3,354,719404,318
Events in quadrant D7,990,720382,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135491
B0140151
C0138211
D0280202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6016781.296543%
B60161121.861702%
C60171402.326741%
D6016144123.952793%

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 7266 6016 1 1 0.01% 0.02%
B 7266 6016 14 14 0.19% 0.23%
C 7267 6017 0 0 0.00% 0.00%
D 7266 6016 980 980 13.49% 16.29%

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 12 96 11848 66.7 839 825 165.3
A 13 254 10328 57.5 839 825 165.3
A 0 226 7285 39.09 839 825 165.3
B 3 64 148822 956.36 834 817 154.8
B 12 111 17985 110.93 834 817 154.8
B 11 111 16173 99.23 834 817 154.8
C 14 238 131314 696.18 817 826 187.4
C 7 247 21103 108.18 817 826 187.4
C 0 10 12840 64.1 817 826 187.4
D 8 195 2187741 11789.06 774 754 185.5
D 1 52 2006836 10813.88 774 754 185.5
D 13 174 775002 4173.62 774 754 185.5

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