ASTROSAT CZTI

Data Quality Report

Orbit 36509

Creation date: 2024-06-27T21:27:44.796709
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/AS1T05_035T01_9000005214_36509cztM0_level2.evt modeM0/AS1T05_035T01_9000005214_36509cztM0_level2_quad_clean.evt
Size (bytes)526,083,84088,153,920
Size501.7 MB 84.1 MB
Events in quadrant A2,598,032619,481
Events in quadrant B3,359,677612,865
Events in quadrant C2,696,618605,974
Events in quadrant D6,942,620483,363

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107243
B0132342
C0108332
D0240502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495680.161421%
B49561362.744149%
C4956551.109766%
D4956134927.219532%

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 7050 4957 1 1 0.01% 0.02%
B 7050 4957 92 92 1.30% 1.86%
C 7050 4957 36 36 0.51% 0.73%
D 7050 4957 1185 1185 16.81% 23.91%

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 194798 1581.34 609 600 122.8
A 7 3 16048 125.79 609 600 122.8
A 9 143 13919 108.46 609 600 122.8
B 5 172 518094 4630.75 590 576 111.8
B 4 171 213142 1902.04 590 576 111.8
B 5 255 80232 712.76 590 576 111.8
C 15 214 215547 1575.58 580 585 136.4
C 0 10 213038 1557.19 580 585 136.4
C 10 49 4907 31.68 580 585 136.4
D 12 227 3531838 27354.31 517 505 129.1
D 12 235 498685 3858.99 517 505 129.1
D 2 250 221761 1713.89 517 505 129.1

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