ASTROSAT CZTI

Data Quality Report

Orbit 20400

Creation date: 2024-06-27T18:14:55.145918
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/AS1A05_198T01_9000003014_20400cztM0_level2.evt modeM0/AS1A05_198T01_9000003014_20400cztM0_level2_quad_clean.evt
Size (bytes)511,934,40089,038,080
Size488.2 MB 84.9 MB
Events in quadrant A3,577,561555,896
Events in quadrant B3,909,309559,136
Events in quadrant C3,579,217537,801
Events in quadrant D3,928,897521,835

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154631
B0162321
C0153922
D0168141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74911461.949005%
B74911912.549726%
C74911502.002403%
D74912503.337338%

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 7751 7492 3 3 0.04% 0.04%
B 7751 7492 20 20 0.26% 0.27%
C 7751 7492 0 0 0.00% 0.00%
D 7751 7492 127 127 1.64% 1.70%

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 5 16 27197 141.37 918 899 186.0
A 12 96 11654 57.82 918 899 186.0
A 3 137 7860 37.42 918 899 186.0
B 7 220 171411 964.5 906 880 176.8
B 0 189 100155 561.49 906 880 176.8
B 3 64 23535 128.13 906 880 176.8
C 14 238 135134 646.07 878 883 207.8
C 8 128 10544 46.49 878 883 207.8
C 13 61 6205 25.61 878 883 207.8
D 1 52 525056 2407.87 890 863 217.7
D 2 234 31419 140.36 890 863 217.7
D 7 238 18871 82.72 890 863 217.7

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