ASTROSAT CZTI

Data Quality Report

Orbit 25970

Creation date: 2024-06-27T19:23:23.771738
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_068T01_9000003760_25970cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25970cztM0_level2_quad_clean.evt
Size (bytes)519,615,36095,575,680
Size495.5 MB 91.1 MB
Events in quadrant A3,203,476639,411
Events in quadrant B3,247,222633,020
Events in quadrant C3,773,285590,165
Events in quadrant D5,071,245577,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135610
B0136690
C0154350
D0193020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6507480.737667%
B6505610.937740%
C65081792.750461%
D65074577.023206%

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 7497 6508 0 0 0.00% 0.00%
B 7497 6508 0 0 0.00% 0.00%
C 7498 6509 20 20 0.27% 0.31%
D 7497 6508 355 355 4.74% 5.45%

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 13 254 10620 58.99 828 812 166.3
A 15 169 8115 43.93 828 812 166.3
A 3 137 7424 39.77 828 812 166.3
B 0 190 44583 281.2 812 793 155.7
B 12 111 18316 112.53 812 793 155.7
B 15 33 16970 103.88 812 793 155.7
C 3 233 650115 3606.26 767 773 180.1
C 14 238 125255 691.34 767 773 180.1
C 7 238 9261 47.14 767 773 180.1
D 1 52 2098071 11369.69 770 752 184.5
D 2 120 27082 142.74 770 752 184.5
D 2 234 26562 139.92 770 752 184.5

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