ASTROSAT CZTI

Data Quality Report

Orbit 40108

Creation date: 2024-06-27T22:12:26.124898
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_004T01_9000005520_40108cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40108cztM0_level2_quad_clean.evt
Size (bytes)455,290,56091,408,320
Size434.2 MB 87.2 MB
Events in quadrant A4,351,501596,669
Events in quadrant B2,733,313636,712
Events in quadrant C4,901,157594,976
Events in quadrant D4,440,861555,256

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168402
B0118621
C0184141
D0170371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54953676.678799%
B5495260.473157%
C54952875.222930%
D54953125.677889%

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 7137 5496 272 272 3.81% 4.95%
B 7137 5496 14 14 0.20% 0.25%
C 7137 5496 269 269 3.77% 4.89%
D 7137 5496 268 268 3.76% 4.88%

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 6 10 747628 6133.73 595 585 121.8
A 13 248 660705 5420.04 595 585 121.8
A 10 83 464569 3809.62 595 585 121.8
B 0 189 194426 1624.1 607 589 119.4
B 4 171 76263 634.05 607 589 119.4
B 5 32 36193 298.31 607 589 119.4
C 9 187 1981706 14398.19 589 593 137.6
C 15 214 225867 1637.23 589 593 137.6
C 10 20 183432 1328.82 589 593 137.6
D 12 227 1609557 11160.86 587 569 144.2
D 13 249 256026 1772.0 587 569 144.2
D 2 249 154167 1065.44 587 569 144.2

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