ASTROSAT CZTI

Data Quality Report

Orbit 40048

Creation date: 2024-06-27T22:11:41.095066
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_054T03_9000005516_40048cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40048cztM0_level2_quad_clean.evt
Size (bytes)312,791,04079,548,480
Size298.3 MB 75.9 MB
Events in quadrant A2,951,047526,631
Events in quadrant B2,457,658545,383
Events in quadrant C2,871,030520,611
Events in quadrant D2,914,788469,890

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117671
B0105621
C0117061
D0120451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4927801.623706%
B4927140.284149%
C4927390.791557%
D49271723.490968%

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 4927 4927 63 63 1.28% 1.28%
B 4927 4927 7 7 0.14% 0.14%
C 4927 4927 36 36 0.73% 0.73%
D 4927 4927 130 130 2.64% 2.64%

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 360828 3272.4 533 522 110.1
A 13 248 182516 1652.92 533 522 110.1
A 9 143 136036 1230.78 533 522 110.1
B 4 171 190068 1814.06 532 517 104.5
B 0 221 83605 795.18 532 517 104.5
B 0 230 41574 392.93 532 517 104.5
C 9 187 597271 4852.15 524 527 123.0
C 15 214 198684 1611.22 524 527 123.0
C 14 254 18388 145.23 524 527 123.0
D 13 249 319100 2505.5 514 498 127.2
D 2 250 300685 2360.69 514 498 127.2
D 12 227 143002 1120.66 514 498 127.2

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