ASTROSAT CZTI

Data Quality Report

Orbit 41478

Creation date: 2024-06-27T22:29:33.586837
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/AS1A12_014T01_9000005674_41478cztM0_level2.fits modeM0/AS1A12_014T01_9000005674_41478cztM0_level2_quad_clean.evt
Size (bytes)117,440,64026,300,160
Size112.0 MB 25.1 MB
Events in quadrant A816,203172,389
Events in quadrant B752,400180,279
Events in quadrant C780,209174,563
Events in quadrant D1,864,591145,396

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035160
B035450
C035410
D067490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168610.059312%
B168640.237248%
C1686120.711744%
D168623613.997628%

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 1686 1686 0 0 0.00% 0.00%
B 1686 1686 1 1 0.06% 0.06%
C 1686 1686 7 7 0.42% 0.42%
D 1686 1686 258 258 15.30% 15.30%

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 144383 3977.68 168 165 36.3
A 13 248 18391 502.69 168 165 36.3
A 13 254 2725 70.61 168 165 36.3
B 5 255 80187 2279.17 170 165 35.1
B 12 111 4187 114.55 170 165 35.1
B 11 111 3841 104.7 170 165 35.1
C 15 214 71768 1806.45 164 165 39.6
C 0 10 41060 1031.73 164 165 39.6
C 4 254 22201 555.94 164 165 39.6
D 12 16 1143752 28740.95 154 149 39.8
D 5 222 44901 1124.7 154 149 39.8
D 12 128 41495 1039.1 154 149 39.8

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