ASTROSAT CZTI

Data Quality Report

Orbit 38911

Creation date: 2024-06-27T21:58:04.075807
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/AS1T05_064T01_9000005416_38911cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38911cztM0_level2_quad_clean.evt
Size (bytes)335,525,76090,239,040
Size320.0 MB 86.1 MB
Events in quadrant A3,062,335608,407
Events in quadrant B2,254,009636,157
Events in quadrant C2,447,796615,003
Events in quadrant D4,281,179535,124

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121453
B097642
C0100372
D0160272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4811611.267928%
B481150.103928%
C4811140.291000%
D48113296.838495%

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 6934 4812 47 47 0.68% 0.98%
B 6934 4812 0 0 0.00% 0.00%
C 6934 4812 8 8 0.12% 0.17%
D 6934 4812 302 302 4.36% 6.28%

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 390079 3523.24 553 543 110.6
A 12 16 327288 2955.31 553 543 110.6
A 9 143 119021 1071.6 553 543 110.6
B 0 230 42066 394.17 560 546 105.3
B 12 111 12338 111.95 560 546 105.3
B 11 111 11403 103.07 560 546 105.3
C 15 214 213995 1654.12 559 564 129.0
C 0 10 25429 192.71 559 564 129.0
C 0 207 12512 92.6 559 564 129.0
D 12 227 560772 4320.1 535 520 129.7
D 2 249 473489 3647.06 535 520 129.7
D 12 235 308007 2371.03 535 520 129.7

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