ASTROSAT CZTI

Data Quality Report

Orbit 29640

Creation date: 2024-06-27T20:06:21.329523
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/AS1T03_286T01_9000004268_29640cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29640cztM0_level2_quad_clean.evt
Size (bytes)615,735,360101,666,880
Size587.2 MB 97.0 MB
Events in quadrant A3,104,948684,392
Events in quadrant B3,239,029697,409
Events in quadrant C3,228,376668,834
Events in quadrant D8,628,748568,097

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136611
B0139621
C0138451
D0303711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6592280.424757%
B6592470.712985%
C6593811.228576%
D6593155323.555286%

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 7612 6592 0 0 0.00% 0.00%
B 7612 6592 3 3 0.04% 0.05%
C 7613 6594 1 1 0.01% 0.02%
D 7613 6593 1334 1334 17.52% 20.23%

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 13 254 13222 77.37 803 786 160.7
A 3 137 7905 44.29 803 786 160.7
A 0 226 6748 37.09 803 786 160.7
B 0 229 52715 342.65 800 780 151.6
B 12 111 18755 118.59 800 780 151.6
B 0 189 18292 115.54 800 780 151.6
C 14 238 129560 707.91 778 783 181.9
C 10 22 30494 163.33 778 783 181.9
C 2 114 15689 81.94 778 783 181.9
D 7 80 4180118 24925.05 708 690 167.7
D 7 238 609736 3632.2 708 690 167.7
D 8 195 558121 3324.38 708 690 167.7

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