ASTROSAT CZTI

Data Quality Report

Orbit 27024

Creation date: 2024-06-27T19:35:39.545151
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_120T02_9000003904_27024cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27024cztM0_level2_quad_clean.evt
Size (bytes)647,164,800109,681,920
Size617.2 MB 104.6 MB
Events in quadrant A6,482,152673,989
Events in quadrant B4,445,403767,002
Events in quadrant C3,512,462742,578
Events in quadrant D4,745,788710,636

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235030
B0172700
C0143610
D0181610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6123106717.426098%
B61232674.360608%
C61231302.123142%
D61233696.026458%

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 7473 6123 836 836 11.19% 13.65%
B 7473 6123 82 82 1.10% 1.34%
C 7473 6123 15 15 0.20% 0.24%
D 7473 6123 339 339 4.54% 5.54%

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 14 235 3153637 19633.29 807 797 160.6
A 6 16 188417 1168.34 807 797 160.6
A 8 192 29291 177.44 807 797 160.6
B 0 189 1059691 6535.11 864 845 162.0
B 12 111 18688 110.13 864 845 162.0
B 0 219 17069 100.13 864 845 162.0
C 14 238 137870 693.55 848 858 197.6
C 15 208 68000 339.87 848 858 197.6
C 13 61 5648 24.25 848 858 197.6
D 1 52 1151523 5904.22 816 797 194.9
D 12 233 416014 2130.42 816 797 194.9
D 2 250 71320 361.84 816 797 194.9

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