ASTROSAT CZTI

Data Quality Report

Orbit 39590

Creation date: 2024-06-27T22:06:32.225791
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_018T01_9000005488_39590cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39590cztM0_level2_quad_clean.evt
Size (bytes)417,369,60094,063,680
Size398.0 MB 89.7 MB
Events in quadrant A3,118,757660,423
Events in quadrant B2,588,881679,232
Events in quadrant C5,652,744571,943
Events in quadrant D3,682,750570,706

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126283
B0111772
C0203752
D0145592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5228671.281561%
B5228220.420811%
C522874914.326702%
D52283246.197399%

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 7201 5229 47 47 0.65% 0.90%
B 7201 5229 14 14 0.19% 0.27%
C 7201 5229 631 631 8.76% 12.07%
D 7201 5229 260 260 3.61% 4.97%

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 439220 3573.96 607 596 122.7
A 9 143 231955 1885.14 607 596 122.7
A 13 248 86510 700.04 607 596 122.7
B 5 172 127186 1112.03 607 591 113.8
B 5 255 74795 651.82 607 591 113.8
B 12 111 13553 113.86 607 591 113.8
C 9 187 1697485 12844.9 574 579 132.1
C 15 208 1460418 11050.4 574 579 132.1
C 15 214 225910 1705.67 574 579 132.1
D 13 174 557278 3882.35 588 572 143.4
D 13 249 259939 1808.77 588 572 143.4
D 13 171 178011 1237.42 588 572 143.4

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