ASTROSAT CZTI

Data Quality Report

Orbit 26614

Creation date: 2024-06-27T19:31:00.866608
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/AS1A09_145T01_9000003848_26614cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26614cztM0_level2_quad_clean.evt
Size (bytes)574,441,920104,425,920
Size547.8 MB 99.6 MB
Events in quadrant A3,554,559691,511
Events in quadrant B3,722,683700,492
Events in quadrant C3,651,465666,377
Events in quadrant D6,004,482626,989

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147960
B0150130
C0150350
D0225860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6846280.408998%
B6847390.569593%
C6840851.242690%
D68376138.965921%

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 7800 6851 2 2 0.03% 0.03%
B 7800 6850 2 2 0.03% 0.03%
C 7799 6850 1 1 0.01% 0.01%
D 7799 6849 564 564 7.23% 8.23%

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 245381 1421.09 855 841 172.1
A 5 168 12946 70.35 855 841 172.1
A 13 254 11377 61.23 855 841 172.1
B 0 189 285085 1746.57 852 835 162.7
B 5 172 55225 334.2 852 835 162.7
B 12 111 19081 112.11 852 835 162.7
C 3 233 337248 1759.13 812 819 191.2
C 14 238 130018 675.56 812 819 191.2
C 15 208 18412 91.99 812 819 191.2
D 1 52 1506937 7887.9 779 760 190.9
D 7 80 1226318 6418.29 779 760 190.9
D 2 250 314810 1644.69 779 760 190.9

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