ASTROSAT CZTI

Data Quality Report

Orbit 33706

Creation date: 2024-06-27T20:51:44.312806
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_090T01_9000004812_33706cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33706cztM0_level2_quad_clean.evt
Size (bytes)717,333,120101,183,040
Size684.1 MB 96.5 MB
Events in quadrant A4,825,194640,925
Events in quadrant B5,787,813608,034
Events in quadrant C4,296,501662,446
Events in quadrant D6,284,114606,587

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308
B0307
C0307
D0318

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280828601
B03481812540
C0242706653
D0337209629

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022044
B022056
C022155
D022058

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78163053.902252%
B77407079.134367%
C7962340.427028%
D7747931.200465%

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 13590 8228 220 220 1.62% 2.67%
B 13591 8052 624 624 4.59% 7.75%
C 13589 8403 30 30 0.22% 0.36%
D 13592 8194 59 59 0.43% 0.72%

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 15 237 1177727 6638.2 890 871 177.3
A 15 169 181915 1021.2 890 871 177.3
A 13 254 13922 73.62 890 871 177.3
B 5 172 1537670 9472.82 852 830 162.2
B 5 200 446847 2749.17 852 830 162.2
B 5 255 306118 1881.74 852 830 162.2
C 15 214 367051 1794.92 886 892 204.0
C 3 233 192467 939.11 886 892 204.0
C 0 10 148407 723.12 886 892 204.0
D 8 195 1820800 8256.05 857 835 220.4
D 12 217 410914 1860.27 857 835 220.4
D 2 250 176911 798.75 857 835 220.4

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