ASTROSAT CZTI

Data Quality Report

Orbit 31572

Creation date: 2024-06-27T20:30:17.547694
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/AS1C06_006T05_9000004600_31572cztM0_level2.evt modeM0/AS1C06_006T05_9000004600_31572cztM0_level2_quad_clean.evt
Size (bytes)396,659,52045,806,400
Size378.3 MB 43.7 MB
Events in quadrant A1,765,471309,320
Events in quadrant B3,024,384301,403
Events in quadrant C3,989,197244,741
Events in quadrant D2,989,839276,596

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07823387
B012145580
C014978581
D011974586

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0762
B0764
C0760
D0762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3606110.305047%
B3586782.175125%
C357185824.026883%
D35791594.442582%

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 4922 3635 0 0 0.00% 0.00%
B 4922 3621 19 19 0.39% 0.52%
C 4922 3613 696 696 14.14% 19.26%
D 4922 3615 141 141 2.86% 3.90%

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 13 254 6690 67.23 457 446 92.9
A 3 137 4475 43.38 457 446 92.9
A 0 226 3919 37.39 457 446 92.9
B 6 159 972711 11252.08 447 436 86.4
B 4 80 187058 2159.77 447 436 86.4
B 5 172 40732 466.34 447 436 86.4
C 3 233 2318151 24698.2 398 401 93.8
C 14 238 64120 679.0 398 401 93.8
C 0 10 19932 208.12 398 401 93.8
D 8 195 906433 8680.87 432 419 104.4
D 12 218 209136 1999.8 432 419 104.4
D 12 33 79102 753.89 432 419 104.4

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