ASTROSAT CZTI

Data Quality Report

Orbit 44399

Creation date: 2024-06-27T23:03:06.930173
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_008T08_9000005998_44399cztM0_level2.fits modeM0/AS1A13_008T08_9000005998_44399cztM0_level2_quad_clean.evt
Size (bytes)485,881,920109,255,680
Size463.4 MB 104.2 MB
Events in quadrant A5,000,854733,925
Events in quadrant B3,482,917770,707
Events in quadrant C3,332,053735,512
Events in quadrant D5,661,123610,929

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205442
B0144982
C0143422
D0212302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65511942.961380%
B65511322.014960%
C6551891.358571%
D655174211.326515%

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 7621 6552 15 15 0.20% 0.23%
B 7620 6550 41 41 0.54% 0.63%
C 7620 6550 30 30 0.39% 0.46%
D 7620 6550 642 642 8.43% 9.80%

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 1778864 10966.23 776 757 162.1
A 13 248 128098 785.36 776 757 162.1
A 0 243 40537 245.34 776 757 162.1
B 5 235 160422 1045.73 774 750 152.7
B 4 173 86503 561.62 774 750 152.7
B 5 255 57616 372.43 774 750 152.7
C 14 254 347315 1953.55 756 761 177.4
C 3 233 22886 124.72 756 761 177.4
C 1 3 10666 55.84 756 761 177.4
D 6 239 1186798 6495.78 725 700 182.6
D 2 249 861119 4712.17 725 700 182.6
D 2 153 209333 1142.6 725 700 182.6

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