ASTROSAT CZTI

Data Quality Report

Orbit 51324

Creation date: 2025-03-31T11:48:48.158755
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_001T03_9000006456_51324cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51324cztM0_level2_quad_clean.evt
Size (bytes)1,007,876,16097,444,800
Size961.2 MB 92.9 MB
Events in quadrant A9,353,059661,716
Events in quadrant B6,670,194754,330
Events in quadrant C14,790,607348,332
Events in quadrant D5,892,700643,179

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332552
B0252312
C0492872
D0231532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A780378510.060233%
B78035396.907600%
C7803447657.362553%
D78034165.331283%

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 8013 7804 512 512 6.39% 6.56%
B 8013 7804 308 308 3.84% 3.95%
C 8012 7803 4118 4118 51.40% 52.77%
D 8013 7804 361 361 4.51% 4.63%

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 12 3 4418594 22171.48 795 775 199.3
A 12 250 621965 3117.53 795 775 199.3
A 12 194 503636 2523.68 795 775 199.3
B 10 254 1843242 10674.16 804 773 172.6
B 5 172 833432 4823.93 804 773 172.6
B 5 185 146282 842.99 804 773 172.6
C 4 12 9472716 66393.49 511 507 142.7
C 15 205 1687317 11823.35 511 507 142.7
C 3 233 973162 6817.62 511 507 142.7
D 11 176 1042685 4826.86 770 742 215.9
D 12 128 320096 1479.43 770 742 215.9
D 3 12 268121 1238.65 770 742 215.9

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