ASTROSAT CZTI

Data Quality Report

Orbit 18380

Creation date: 2024-06-27T17:49:03.817602
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/AS1A06_006T01_9000002724_18380cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18380cztM0_level2_quad_clean.evt
Size (bytes)482,022,72085,403,520
Size459.7 MB 81.4 MB
Events in quadrant A3,136,305543,545
Events in quadrant B3,341,253554,662
Events in quadrant C3,180,038535,263
Events in quadrant D4,512,112512,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132302
B0138773
C0132822
D0175062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6314240.380108%
B6313600.950420%
C6313570.902899%
D63131362.154285%

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 7504 6315 4 4 0.05% 0.06%
B 7503 6314 23 23 0.31% 0.36%
C 7503 6314 5 5 0.07% 0.08%
D 7503 6314 164 164 2.19% 2.60%

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 15 174 35436 218.45 790 775 158.7
A 4 2 32430 199.51 790 775 158.7
A 8 34 16458 98.84 790 775 158.7
B 15 222 59401 388.76 798 781 150.8
B 4 216 36488 236.8 798 781 150.8
B 0 244 36079 234.09 798 781 150.8
C 14 238 118717 659.63 762 766 178.8
C 0 207 53289 293.73 762 766 178.8
C 3 233 31215 170.28 762 766 178.8
D 1 52 1437162 7667.68 759 735 187.3
D 14 34 111208 589.71 759 735 187.3
D 7 38 34928 182.52 759 735 187.3

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