ASTROSAT CZTI

Data Quality Report

Orbit 38652

Creation date: 2024-06-27T21:54:39.147898
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_061T03_9000005390_38652cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38652cztM0_level2_quad_clean.evt
Size (bytes)309,144,96089,101,440
Size294.8 MB 85.0 MB
Events in quadrant A3,121,036593,891
Events in quadrant B2,494,230615,532
Events in quadrant C2,513,169594,652
Events in quadrant D2,928,419546,157

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122163
B0104442
C0101662
D0118392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4963811.632077%
B4963240.483578%
C496390.181342%
D4963330.664920%

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 7055 4964 74 74 1.05% 1.49%
B 7055 4964 19 19 0.27% 0.38%
C 7055 4964 4 4 0.06% 0.08%
D 7055 4964 29 29 0.41% 0.58%

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 405699 3450.11 583 572 117.4
A 9 143 312960 2660.33 583 572 117.4
A 15 174 64170 541.61 583 572 117.4
B 5 184 70740 632.16 580 566 111.0
B 0 186 30494 269.6 580 566 111.0
B 5 200 25374 223.48 580 566 111.0
C 15 214 206711 1539.07 577 583 133.9
C 0 10 23857 173.78 577 583 133.9
C 15 159 9622 67.49 577 583 133.9
D 5 222 391751 2755.16 578 563 142.0
D 2 249 76241 533.01 578 563 142.0
D 12 233 38439 266.76 578 563 142.0

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