ASTROSAT CZTI

Data Quality Report

Orbit 20230521_A12_101T03_9000005656_level2

Creation date: 2023-05-22T11:13:25.896939
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/AS1A12_101T03_9000005656cztM0_level2.fits modeM0/AS1A12_101T03_9000005656cztM0_level2_quad_clean.evt
Size (bytes)111,432,960139,271,040
Size106.3 MB 132.8 MB
Events in quadrant A658,400873,395
Events in quadrant B637,086872,337
Events in quadrant C629,684815,567
Events in quadrant D560,572767,217

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274260
B0263070
C0300780
D0308460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12861300.233263%
B12861420.326569%
C128613782.939118%
D128613122.425939%

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 17066 12859 0 0 0.00% 0.00%
B 17066 12861 0 0 0.00% 0.00%
C 17066 12820 0 0 0.00% 0.00%
D 17066 12857 0 0 0.00% 0.00%

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 7 110 557 8.66 171 160 45.8
A 0 29 541 8.31 171 160 45.8
A 9 19 526 7.98 171 160 45.8
B 2 9 572 11.59 167 159 35.6
B 2 8 455 8.3 167 159 35.6
B 3 80 451 8.19 167 159 35.6
C 1 81 547 8.73 166 155 44.9
C 1 80 511 7.93 166 155 44.9
C 3 203 501 7.7 166 155 44.9
D 7 3 413 6.03 159 145 44.4
D 12 6 412 6.01 159 145 44.4
D 1 3 410 5.97 159 145 44.4

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