ASTROSAT CZTI

Data Quality Report

Orbit 39673

Creation date: 2024-06-27T22:07:34.759589
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_051T01_9000005490_39673cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39673cztM0_level2_quad_clean.evt
Size (bytes)526,150,08091,388,160
Size501.8 MB 87.2 MB
Events in quadrant A7,839,816543,189
Events in quadrant B2,717,853651,049
Events in quadrant C5,136,583606,057
Events in quadrant D3,335,919564,503

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272743
B0121192
C0192252
D0139042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5754115120.003476%
B5754380.660410%
C57543335.787278%
D57541813.145638%

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 8802 5756 967 967 10.99% 16.80%
B 8802 5756 15 15 0.17% 0.26%
C 8802 5756 287 287 3.26% 4.99%
D 8802 5756 141 141 1.60% 2.45%

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 15 222 4796652 38567.5 609 596 124.4
A 10 83 449170 3607.21 609 596 124.4
A 15 174 165796 1328.46 609 596 124.4
B 5 172 148880 1195.49 636 619 124.0
B 0 186 38207 303.09 636 619 124.0
B 12 111 15577 120.61 636 619 124.0
C 15 208 1681139 11622.06 614 617 144.6
C 9 187 540558 3734.09 614 617 144.6
C 15 214 252266 1740.34 614 617 144.6
D 12 233 439399 2869.47 621 603 152.9
D 13 249 192518 1255.01 621 603 152.9
D 12 227 84956 551.62 621 603 152.9

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