ASTROSAT CZTI

Data Quality Report

Orbit 23989

Creation date: 2024-06-27T19:00:53.498363
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/AS1A07_165T01_9000003558_23989cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_23989cztM0_level2_quad_clean.evt
Size (bytes)677,151,360136,866,240
Size645.8 MB 130.5 MB
Events in quadrant A3,432,835965,897
Events in quadrant B3,594,650976,597
Events in quadrant C3,699,473924,307
Events in quadrant D9,276,679760,070

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152032
B0155462
C0158992
D0327092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7439550.739347%
B7439911.223283%
C74391301.747547%
D7438218529.376176%

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 7749 7441 0 0 0.00% 0.00%
B 7749 7441 1 1 0.01% 0.01%
C 7749 7441 15 15 0.19% 0.20%
D 7748 7440 1375 1375 17.75% 18.48%

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 13742 72.23 889 868 178.2
A 3 137 7732 38.51 889 868 178.2
A 0 226 7703 38.35 889 868 178.2
B 15 33 34182 199.96 888 869 166.6
B 0 197 21598 124.43 888 869 166.6
B 12 111 19214 110.12 888 869 166.6
C 0 10 237233 1215.53 841 845 194.5
C 14 238 132936 679.22 841 845 194.5
C 7 247 39380 198.15 841 845 194.5
D 12 218 4075741 22647.35 733 712 179.9
D 1 52 1290794 7169.75 733 712 179.9
D 8 195 316216 1753.44 733 712 179.9

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