ASTROSAT CZTI

Data Quality Report

Orbit 28604

Creation date: 2024-06-27T19:53:55.452600
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/AS1A10_045T06_9000004108_28604cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28604cztM0_level2_quad_clean.evt
Size (bytes)562,772,16070,346,880
Size536.7 MB 67.1 MB
Events in quadrant A3,595,077422,013
Events in quadrant B3,584,251426,972
Events in quadrant C3,635,522415,319
Events in quadrant D5,777,152400,914

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146052
B0144972
C0146602
D0217562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66651061.590398%
B66651111.665416%
C66641592.385954%
D66644186.272509%

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 7805 6665 0 0 0.00% 0.00%
B 7805 6665 1 1 0.01% 0.02%
C 7804 6664 6 6 0.08% 0.09%
D 7804 6664 286 286 3.66% 4.29%

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 52398 283.83 912 895 181.5
A 13 254 11597 58.98 912 895 181.5
A 15 47 11072 56.08 912 895 181.5
B 10 245 40615 235.18 896 875 169.0
B 12 111 20254 114.68 896 875 169.0
B 11 111 18514 104.39 896 875 169.0
C 14 238 142833 697.32 876 883 203.6
C 7 247 31221 149.03 876 883 203.6
C 0 207 24539 116.21 876 883 203.6
D 1 52 1934188 9292.56 877 857 208.1
D 8 195 418625 2008.0 877 857 208.1
D 2 250 40974 192.82 877 857 208.1

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