ASTROSAT CZTI

Data Quality Report

Orbit 21469

Creation date: 2024-06-27T18:28:14.589820
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/AS1A06_005T09_9000003168_21469cztM0_level2.evt modeM0/AS1A06_005T09_9000003168_21469cztM0_level2_quad_clean.evt
Size (bytes)517,075,20098,786,880
Size493.1 MB 94.2 MB
Events in quadrant A3,543,670626,063
Events in quadrant B3,649,373638,417
Events in quadrant C3,562,546618,910
Events in quadrant D4,412,364604,201

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151002
B0152522
C0151722
D0178382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72361772.446103%
B72352132.944022%
C72352453.386317%
D72362042.819237%

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 8686 7236 0 0 0.00% 0.00%
B 8685 7235 4 4 0.05% 0.06%
C 8685 7235 0 0 0.00% 0.00%
D 8686 7236 72 72 0.83% 1.00%

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 10842 53.5 919 901 185.8
A 3 137 7909 37.71 919 901 185.8
A 0 226 7765 36.94 919 901 185.8
B 0 230 27442 151.59 911 888 175.2
B 12 111 21819 119.49 911 888 175.2
B 3 64 20480 111.85 911 888 175.2
C 14 238 138357 666.7 879 885 206.2
C 13 61 5909 24.36 879 885 206.2
C 3 202 2036 5.58 879 885 206.2
D 1 20 554984 2542.8 895 871 217.9
D 13 174 245961 1124.71 895 871 217.9
D 14 35 102230 465.13 895 871 217.9

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