ASTROSAT CZTI

Data Quality Report

Orbit 37394

Creation date: 2024-06-27T21:39:25.854893
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/AS1C07_001T01_9000005320_37394cztM0_level2.evt modeM0/AS1C07_001T01_9000005320_37394cztM0_level2_quad_clean.evt
Size (bytes)589,973,76097,807,680
Size562.6 MB 93.3 MB
Events in quadrant A2,763,848678,928
Events in quadrant B3,039,738680,187
Events in quadrant C3,585,729657,308
Events in quadrant D8,104,742558,949

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116133
B0127412
C0141952
D0279532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5518180.326205%
B5518731.322943%
C5518901.631026%
D5518162129.376586%

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 7101 5519 3 3 0.04% 0.05%
B 7101 5519 46 46 0.65% 0.83%
C 7101 5519 87 87 1.23% 1.58%
D 7101 5519 1553 1553 21.87% 28.14%

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 299137 2431.13 609 596 122.8
A 10 248 30909 246.85 609 596 122.8
A 12 227 16878 132.59 609 596 122.8
B 4 171 190621 1656.54 599 583 114.7
B 5 255 113496 984.25 599 583 114.7
B 4 232 95388 826.41 599 583 114.7
C 1 23 955562 7059.63 584 587 135.3
C 15 214 237038 1747.96 584 587 135.3
C 0 10 56888 416.2 584 587 135.3
D 12 235 4497717 34395.48 534 517 130.7
D 12 227 517296 3952.43 534 517 130.7
D 13 249 375720 2869.62 534 517 130.7

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