ASTROSAT CZTI

Data Quality Report

Orbit 35180

Creation date: 2022-04-01T04:00:42.189473
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/AS1C07_001T06_9000005046_35180cztM0_level2.evt modeM0/AS1C07_001T06_9000005046_35180cztM0_level2_quad_clean.evt
Size (bytes)915,546,24098,501,760
Size873.1 MB 93.9 MB
Events in quadrant A2,636,927719,335
Events in quadrant B10,064,985540,937
Events in quadrant C3,186,687735,716
Events in quadrant D11,447,470577,647

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118823
B0339352
C0131252
D0380162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A581480.137599%
B5814307152.820777%
C58141031.771586%
D5814267946.078431%

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 7127 5815 0 0 0.00% 0.00%
B 7127 5815 2220 2220 31.15% 38.18%
C 7127 5815 74 74 1.04% 1.27%
D 7127 5815 2965 2965 41.60% 50.99%

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 100987 770.7 646 631 130.2
A 13 6 16560 122.33 646 631 130.2
A 13 254 9674 69.44 646 631 130.2
B 5 236 7829018 80852.36 507 493 96.8
B 5 172 150806 1552.42 507 493 96.8
B 5 200 34151 347.62 507 493 96.8
C 15 214 244166 1656.88 635 641 147.0
C 0 10 227414 1542.9 635 641 147.0
C 3 233 76200 514.08 635 641 147.0
D 8 195 7762582 53189.02 553 544 145.9
D 8 230 735315 5034.99 553 544 145.9
D 10 118 239795 1639.46 553 544 145.9

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