ASTROSAT CZTI

Data Quality Report

Orbit 26848

Creation date: 2024-06-27T19:33:37.097851
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_224T01_9000003868_26848cztM0_level2.evt modeM0/AS1T03_224T01_9000003868_26848cztM0_level2_quad_clean.evt
Size (bytes)540,696,96090,483,840
Size515.6 MB 86.3 MB
Events in quadrant A4,046,653571,231
Events in quadrant B3,548,002597,289
Events in quadrant C3,347,117571,772
Events in quadrant D4,982,856536,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163240
B0146540
C0139470
D0193060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6650490.736842%
B6649590.887351%
C6649620.932471%
D66493074.617236%

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 7825 6651 5 5 0.06% 0.08%
B 7824 6649 9 9 0.12% 0.14%
C 7824 6650 1 1 0.01% 0.02%
D 7824 6650 303 303 3.87% 4.56%

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 0 13 817451 4899.58 836 820 166.7
A 13 254 11500 64.08 836 820 166.7
A 3 137 7375 39.33 836 820 166.7
B 7 205 110983 685.58 845 823 160.7
B 15 33 77103 474.73 845 823 160.7
B 0 229 23146 138.93 845 823 160.7
C 14 238 132817 693.89 815 822 190.2
C 15 208 29359 150.02 815 822 190.2
C 7 87 8083 38.17 815 822 190.2
D 7 80 1048142 5540.72 795 777 189.0
D 1 52 747678 3951.22 795 777 189.0
D 2 250 107488 564.52 795 777 189.0

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