ASTROSAT CZTI

Data Quality Report

Orbit 39958

Creation date: 2024-06-27T22:10:36.948934
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/AS1C07_001T01_9000005514_39958cztM0_level2.fits modeM0/AS1C07_001T01_9000005514_39958cztM0_level2_quad_clean.evt
Size (bytes)416,888,64094,752,000
Size397.6 MB 90.4 MB
Events in quadrant A3,473,657650,426
Events in quadrant B3,336,408645,224
Events in quadrant C2,884,102616,254
Events in quadrant D5,273,793539,886

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140633
B0141632
C0124082
D0198052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5966941.575595%
B59661772.966812%
C5966230.385518%
D59665098.531680%

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 7338 5966 77 77 1.05% 1.29%
B 7338 5966 157 157 2.14% 2.63%
C 7339 5967 19 19 0.26% 0.32%
D 7339 5967 542 542 7.39% 9.08%

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 518602 3992.64 636 623 129.7
A 13 248 398668 3068.18 636 623 129.7
A 15 222 23224 174.21 636 623 129.7
B 5 32 287062 2368.01 627 611 121.0
B 5 255 263392 2172.34 627 611 121.0
B 4 171 124390 1023.25 627 611 121.0
C 15 214 250872 1727.44 617 620 144.9
C 7 220 53062 361.99 617 620 144.9
C 10 20 49562 337.83 617 620 144.9
D 2 249 1136929 7595.0 601 582 149.6
D 12 227 973218 6500.81 601 582 149.6
D 12 233 289071 1928.17 601 582 149.6

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