ASTROSAT CZTI

Data Quality Report

Orbit 49704

Creation date: 2024-12-10T01:30:33.861891
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/AS1T05_233T01_9000006438_49704cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49704cztM0_level2_quad_clean.evt
Size (bytes)1,609,657,92052,416,000
Size1.5 GB 50.0 MB
Events in quadrant A20,287,049118,929
Events in quadrant B5,616,036823,985
Events in quadrant C11,910,568134
Events in quadrant D21,119,50158,412

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0659882
B0225252
C0412822
D0686096

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8431744788.328787%
B84323804.506641%
C8432843199.988140%
D8431784693.061321%

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 9911 8431 7757 7757 78.27% 92.01%
B 9912 8432 205 205 2.07% 2.43%
C 9911 8431 1397 1397 14.10% 16.57%
D 9910 8430 7733 7733 78.03% 91.73%

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 10 83 9118902 54607.89 582 563 167.0
A 12 50 1689904 10117.12 582 563 167.0
A 0 98 950737 5690.4 582 563 167.0
B 4 169 412629 2189.09 892 863 188.1
B 1 255 352524 1869.55 892 863 188.1
B 4 249 324881 1722.59 892 863 188.1
C 15 190 3014611 76549.8 68 64 39.4
C 15 180 2649922 67289.08 68 64 39.4
C 15 181 1102558 27996.14 68 64 39.4
D 15 40 6356758 46380.83 378 361 137.0
D 15 168 2947998 21508.07 378 361 137.0
D 2 165 1259200 9185.39 378 361 137.0

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