ASTROSAT CZTI

Data Quality Report

Orbit 33287

Creation date: 2024-06-27T20:47:05.403299
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/AS1T04_072T01_9000004780_33287cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33287cztM0_level2_quad_clean.evt
Size (bytes)1,429,220,160169,925,760
Size1.3 GB 162.1 MB
Events in quadrant A6,866,3121,071,890
Events in quadrant B10,057,0681,029,434
Events in quadrant C8,825,6891,039,970
Events in quadrant D16,525,409968,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305413
B0399132
C0353912
D0597062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15005160.106631%
B150058535.684772%
C150052031.352882%
D1500512468.303899%

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 19274 15008 1 1 0.01% 0.01%
B 19274 15008 553 553 2.87% 3.68%
C 19274 15008 181 181 0.94% 1.21%
D 19274 15008 1032 1032 5.35% 6.88%

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 12 16 38037 103.76 1748 1709 350.1
A 13 254 25727 68.6 1748 1709 350.1
A 13 6 23199 61.38 1748 1709 350.1
B 5 172 1669034 5158.99 1701 1654 323.2
B 0 219 1296842 4007.4 1701 1654 323.2
B 0 190 74521 225.46 1701 1654 323.2
C 1 23 955764 2466.02 1688 1701 386.9
C 15 214 633145 1632.13 1688 1701 386.9
C 0 10 261292 670.98 1688 1701 386.9
D 8 195 6288011 14161.37 1634 1604 443.9
D 12 6 1093280 2459.21 1634 1604 443.9
D 12 218 983075 2210.96 1634 1604 443.9

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