ASTROSAT CZTI

Data Quality Report

Orbit 25924

Creation date: 2024-06-27T19:22:53.632721
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/AS1T03_214T01_9000003758_25924cztM0_level2.evt modeM0/AS1T03_214T01_9000003758_25924cztM0_level2_quad_clean.evt
Size (bytes)808,727,040108,060,480
Size771.3 MB 103.1 MB
Events in quadrant A13,771,827326,607
Events in quadrant B3,360,121877,852
Events in quadrant C3,125,418827,257
Events in quadrant D3,830,900821,635

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0449800
B0138730
C0130440
D0153970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5970517286.633166%
B59701021.708543%
C59701131.892797%
D59692003.350645%

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 7299 5970 4621 4621 63.31% 77.40%
B 7300 5971 20 20 0.27% 0.33%
C 7300 5971 1 1 0.01% 0.02%
D 7299 5970 126 126 1.73% 2.11%

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 0 13 12325794 164885.04 374 369 74.8
A 13 254 4815 59.48 374 369 74.8
A 0 226 3095 36.47 374 369 74.8
B 15 220 114348 763.77 796 779 148.7
B 0 190 47999 317.56 796 779 148.7
B 15 33 42120 278.03 796 779 148.7
C 14 238 126702 729.93 756 761 172.5
C 3 233 33805 191.52 756 761 172.5
C 2 16 22145 123.94 756 761 172.5
D 1 52 845372 4629.47 771 752 182.4
D 7 80 38198 205.25 771 752 182.4
D 2 234 25434 135.29 771 752 182.4

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