ASTROSAT CZTI

Data Quality Report

Orbit 39824

Creation date: 2024-06-27T22:09:20.355147
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_022T01_9000005498_39824cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39824cztM0_level2_quad_clean.evt
Size (bytes)625,985,28077,408,640
Size597.0 MB 73.8 MB
Events in quadrant A3,180,843655,777
Events in quadrant B2,896,811661,153
Events in quadrant C11,914,035123,529
Events in quadrant D4,773,838536,952

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125263
B0119232
C0389242
D0176632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5229460.879709%
B5229661.262192%
C5229436383.438516%
D52294779.122203%

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 7352 5230 38 38 0.52% 0.73%
B 7352 5230 44 44 0.60% 0.84%
C 7352 5230 3833 3833 52.14% 73.29%
D 7352 5230 452 452 6.15% 8.64%

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 469923 3817.69 611 601 122.9
A 9 143 127451 1031.86 611 601 122.9
A 13 248 106086 858.07 611 601 122.9
B 4 171 258033 2265.32 600 585 113.6
B 5 255 106695 933.68 600 585 113.6
B 5 172 68119 594.24 600 585 113.6
C 9 187 8901646 121195.65 315 318 73.4
C 15 208 1587671 21612.54 315 318 73.4
C 15 214 124156 1686.11 315 318 73.4
D 12 227 992639 7075.65 579 563 140.2
D 12 233 957590 6825.68 579 563 140.2
D 13 249 246580 1754.63 579 563 140.2

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