ASTROSAT CZTI

Data Quality Report

Orbit 40070

Creation date: 2024-06-27T22:11:57.829155
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_40070cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40070cztM0_level2_quad_clean.evt
Size (bytes)350,671,68093,009,600
Size334.4 MB 88.7 MB
Events in quadrant A2,786,938629,862
Events in quadrant B2,469,660661,933
Events in quadrant C4,720,232589,134
Events in quadrant D2,596,142568,492

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114813
B0108432
C0175482
D0114602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5236130.248281%
B5236320.611154%
C52364458.498854%
D5236220.420168%

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 7358 5237 7 7 0.10% 0.13%
B 7358 5237 10 10 0.14% 0.19%
C 7358 5237 476 476 6.47% 9.09%
D 7358 5237 20 20 0.27% 0.38%

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 452473 3792.52 587 576 119.2
A 6 10 36495 301.45 587 576 119.2
A 10 255 9128 71.77 587 576 119.2
B 5 32 71625 630.47 592 576 112.7
B 0 230 23351 202.1 592 576 112.7
B 0 190 17957 154.23 592 576 112.7
C 9 187 2052306 15700.78 563 568 130.7
C 15 214 214223 1634.98 563 568 130.7
C 3 233 178066 1358.29 563 568 130.7
D 12 227 221403 1586.33 568 553 139.2
D 9 19 54053 384.28 568 553 139.2
D 13 249 53465 380.06 568 553 139.2

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