ASTROSAT CZTI

Data Quality Report

Orbit 25146

Creation date: 2024-06-27T19:14:23.141735
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/AS1A07_018T07_9000003680_25146cztM0_level2.evt modeM0/AS1A07_018T07_9000003680_25146cztM0_level2_quad_clean.evt
Size (bytes)556,200,000101,272,320
Size530.4 MB 96.6 MB
Events in quadrant A3,679,768650,355
Events in quadrant B3,558,073661,224
Events in quadrant C3,718,038635,653
Events in quadrant D5,398,885617,325

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157270
B0152300
C0156440
D0210380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72261612.228065%
B72271211.674277%
C72271862.573682%
D72273945.451778%

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 8737 7227 83 83 0.95% 1.15%
B 8738 7227 0 0 0.00% 0.00%
C 8738 7229 1 1 0.01% 0.01%
D 8738 7228 262 262 3.00% 3.62%

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 15 174 213604 1172.89 897 879 181.4
A 13 254 10840 54.92 897 879 181.4
A 3 137 8314 40.99 897 879 181.4
B 12 111 21773 118.87 903 877 175.8
B 11 111 18998 103.08 903 877 175.8
B 3 64 18159 98.31 903 877 175.8
C 14 238 138991 668.34 872 879 206.6
C 7 247 76882 367.79 872 879 206.6
C 9 54 76139 364.19 872 879 206.6
D 1 52 1633291 7719.85 863 840 211.5
D 8 195 293396 1383.5 863 840 211.5
D 2 244 101912 477.97 863 840 211.5

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