ASTROSAT CZTI

Data Quality Report

Orbit 20240202_A13_049T04_9000006048_level2

Creation date: 2024-02-06T15:38:29.635220
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_049T04_9000006048cztM0_level2.fits modeM0/AS1A13_049T04_9000006048cztM0_level2_quad_clean.evt
Size (bytes)773,352,000788,330,880
Size737.5 MB 751.8 MB
Events in quadrant A3,711,1023,511,668
Events in quadrant B4,654,5225,077,708
Events in quadrant C4,851,7204,884,322
Events in quadrant D3,935,2704,152,498

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04882910
B02037910
C01950270
D02864430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018480
B018480
C018480
D018460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A911543396337.258924%
B9115324552.693274%
C9115812391.359179%
D9115586129.447644%

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 106627 87802 0 0 0.00% 0.00%
B 106627 91138 0 0 0.00% 0.00%
C 106628 91148 0 0 0.00% 0.00%
D 106628 90945 0 0 0.00% 0.00%

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 7 110 3087 8.91 966 900 245.6
A 15 236 2916 8.21 966 900 245.6
A 0 29 2857 7.97 966 900 245.6
B 2 9 4421 13.43 1230 1168 242.2
B 2 8 3482 9.55 1230 1168 242.2
B 3 17 3441 9.39 1230 1168 242.2
C 3 202 3743 7.79 1282 1193 327.2
C 1 81 3726 7.74 1282 1193 327.2
C 1 80 3642 7.48 1282 1193 327.2
D 10 189 2926 6.07 1134 1029 312.6
D 4 12 2862 5.86 1134 1029 312.6
D 4 250 2766 5.56 1134 1029 312.6

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