ASTROSAT CZTI

Data Quality Report

Orbit 33431

Creation date: 2024-06-27T20:48:45.698620
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/AS1A11_046T04_9000004792_33431cztM0_level2.evt modeM0/AS1A11_046T04_9000004792_33431cztM0_level2_quad_clean.evt
Size (bytes)879,402,240142,202,880
Size838.7 MB 135.6 MB
Events in quadrant A4,362,935958,708
Events in quadrant B6,108,805936,717
Events in quadrant C4,680,220936,714
Events in quadrant D10,882,915858,746

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182043
B0239992
C0194552
D0385732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8876110.123930%
B88763864.348806%
C8876680.766111%
D8876103611.671924%

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 10248 8877 0 0 0.00% 0.00%
B 10248 8877 272 272 2.65% 3.06%
C 10248 8877 59 59 0.58% 0.66%
D 10248 8877 986 986 9.62% 11.11%

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 47 498939 2506.66 993 971 198.7
A 13 6 17694 84.18 993 971 198.7
A 13 254 16545 78.4 993 971 198.7
B 5 255 1174441 6274.77 981 955 187.0
B 5 172 623138 3326.89 981 955 187.0
B 0 213 198896 1058.41 981 955 187.0
C 15 214 376646 1678.82 964 970 223.8
C 1 23 232071 1032.75 964 970 223.8
C 14 254 108817 481.95 964 970 223.8
D 8 195 4126203 17956.53 932 904 229.7
D 1 52 1300831 5658.3 932 904 229.7
D 13 249 647481 2814.41 932 904 229.7

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