ASTROSAT CZTI

Data Quality Report

Orbit 42295

Creation date: 2024-06-27T22:38:46.400415
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_089T08_9000005790_42295cztM0_level2.fits modeM0/AS1A12_089T08_9000005790_42295cztM0_level2_quad_clean.evt
Size (bytes)366,917,76097,954,560
Size349.9 MB 93.4 MB
Events in quadrant A3,381,545652,186
Events in quadrant B2,873,007676,564
Events in quadrant C2,865,707641,922
Events in quadrant D3,990,838572,482

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135132
B0126202
C0123392
D0160342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6049320.529013%
B6050240.396694%
C6050150.247934%
D60492353.884940%

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 9125 6051 15 15 0.16% 0.25%
B 9126 6052 8 8 0.09% 0.13%
C 9126 6052 9 9 0.10% 0.15%
D 9125 6051 184 184 2.02% 3.04%

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 627300 4609.61 663 649 135.9
A 7 3 92174 673.25 663 649 135.9
A 13 248 67874 494.5 663 649 135.9
B 3 112 47773 364.69 663 645 129.2
B 0 229 42695 325.39 663 645 129.2
B 4 171 41353 315.01 663 645 129.2
C 15 214 254148 1681.18 648 651 150.8
C 12 249 53434 350.05 648 651 150.8
C 7 247 13330 84.09 648 651 150.8
D 1 52 847419 5432.95 635 617 155.9
D 12 6 213737 1367.35 635 617 155.9
D 2 249 189424 1211.36 635 617 155.9

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