ASTROSAT CZTI

Data Quality Report

Orbit 04814

Creation date: 2024-06-27T14:47:23.079594
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/AS1G05_142T01_9000000610_04814cztM0_level2.evt modeM0/AS1G05_142T01_9000000610_04814cztM0_level2_quad_clean.evt
Size (bytes)1,861,260,480240,943,680
Size1.7 GB 229.8 MB
Events in quadrant A11,128,8241,467,501
Events in quadrant B13,086,2171,468,300
Events in quadrant C11,482,5911,483,675
Events in quadrant D19,105,3731,280,769

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04700
C04700
D04700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0488056
B0541205
C0503545
D0731728

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232024361.879148%
B232027633.288510%
C232023971.711059%
D23201331214.275247%

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 25604 23205 82 82 0.32% 0.35%
B 25604 23205 320 320 1.25% 1.38%
C 25604 23206 104 104 0.41% 0.45%
D 25603 23205 2690 2690 10.51% 11.59%

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 13 251 340547 610.62 2699 2639 553.4
A 8 15 218536 390.14 2699 2639 553.4
A 0 50 123357 218.14 2699 2639 553.4
B 10 16 2249178 4287.37 2718 2658 524.0
B 14 167 122995 229.66 2718 2658 524.0
B 15 54 67059 122.91 2718 2658 524.0
C 9 247 1024884 1677.6 2619 2628 609.4
C 9 54 71007 112.21 2619 2628 609.4
C 12 4 42507 65.44 2619 2628 609.4
D 12 79 8200793 14008.41 2409 2337 585.3
D 2 136 580721 988.26 2409 2337 585.3
D 13 235 456732 776.41 2409 2337 585.3

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