ASTROSAT CZTI

Data Quality Report

Orbit 06779

Creation date: 2024-06-27T15:11:36.427858
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/AS1G06_086T02_9000000936_06779cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06779cztM0_level2_quad_clean.evt
Size (bytes)589,775,040115,234,560
Size562.5 MB 109.9 MB
Events in quadrant A3,929,715728,765
Events in quadrant B4,032,061744,885
Events in quadrant C4,129,042727,660
Events in quadrant D5,186,661690,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178353
B0179892
C0184482
D0214872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8606840.976063%
B86061161.347897%
C8606931.080641%
D86061691.963746%

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 9016 8610 3 3 0.03% 0.03%
B 9016 8610 0 0 0.00% 0.00%
C 9016 8610 13 13 0.14% 0.15%
D 9016 8610 72 72 0.80% 0.84%

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 13 248 21224 96.26 1014 991 210.2
A 0 226 10033 43.02 1014 991 210.2
A 12 194 9404 40.03 1014 991 210.2
B 0 214 27323 131.4 1026 1000 200.3
B 4 81 25985 124.72 1026 1000 200.3
B 12 111 20845 99.06 1026 1000 200.3
C 9 247 191990 815.7 995 998 234.1
C 12 16 35690 148.17 995 998 234.1
C 4 254 9873 37.9 995 998 234.1
D 8 195 1013225 4169.09 980 945 242.8
D 2 152 215843 885.06 980 945 242.8
D 2 63 161575 661.56 980 945 242.8

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