ASTROSAT CZTI

Data Quality Report

Orbit 22923

Creation date: 2024-06-27T18:47:35.614295
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_170T01_9000003388_22923cztM0_level2.evt modeM0/AS1T03_170T01_9000003388_22923cztM0_level2_quad_clean.evt
Size (bytes)497,442,24093,942,720
Size474.4 MB 89.6 MB
Events in quadrant A3,601,934608,725
Events in quadrant B3,210,725627,115
Events in quadrant C3,230,633594,600
Events in quadrant D4,571,282551,928

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151582
B0137752
C0136662
D0182782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66341221.839011%
B6634320.482364%
C6634410.618028%
D66345047.597226%

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 7684 6634 35 35 0.46% 0.53%
B 7684 6634 5 5 0.07% 0.08%
C 7684 6634 0 0 0.00% 0.00%
D 7684 6634 345 345 4.49% 5.20%

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 23 527420 3288.14 789 772 160.2
A 0 226 38771 237.25 789 772 160.2
A 13 254 12087 70.65 789 772 160.2
B 0 190 33645 216.16 797 777 152.1
B 0 228 28530 182.52 797 777 152.1
B 12 111 18158 114.31 797 777 152.1
C 6 80 133828 754.17 759 765 176.4
C 14 238 119545 673.21 759 765 176.4
C 8 208 9014 46.75 759 765 176.4
D 1 52 802390 4495.52 737 716 178.3
D 12 233 695643 3896.92 737 716 178.3
D 13 153 186882 1043.96 737 716 178.3

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