ASTROSAT CZTI

Data Quality Report

Orbit 44779

Creation date: 2024-06-27T23:06:27.705622
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/AS1A13_004T13_9000006022_44779cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44779cztM0_level2_quad_clean.evt
Size (bytes)386,801,28087,661,440
Size368.9 MB 83.6 MB
Events in quadrant A4,779,542568,335
Events in quadrant B3,112,291609,900
Events in quadrant C2,352,738592,696
Events in quadrant D3,665,637515,761

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184091
B0127501
C0108391
D0145381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52463276.233321%
B52461052.001525%
C5246180.343119%
D52463025.756767%

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 6457 5247 252 252 3.90% 4.80%
B 6457 5247 53 53 0.82% 1.01%
C 6457 5247 7 7 0.11% 0.13%
D 6457 5247 281 281 4.35% 5.36%

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 1481224 12424.09 573 562 119.2
A 15 223 808850 6782.27 573 562 119.2
A 13 248 226846 1898.73 573 562 119.2
B 0 189 473059 4091.91 589 572 115.5
B 5 255 113791 980.52 589 572 115.5
B 0 190 77994 670.5 589 572 115.5
C 14 254 44753 320.95 585 588 137.6
C 12 2 10646 73.09 585 588 137.6
C 3 233 9260 63.02 585 588 137.6
D 2 249 399680 2795.09 567 549 142.8
D 1 52 391162 2735.44 567 549 142.8
D 1 47 135594 945.71 567 549 142.8

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