ASTROSAT CZTI

Data Quality Report

Orbit 23487

Creation date: 2024-06-27T18:55:05.939632
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_100T02_9000003476_23487cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23487cztM0_level2_quad_clean.evt
Size (bytes)687,248,640108,855,360
Size655.4 MB 103.8 MB
Events in quadrant A3,399,979732,887
Events in quadrant B3,881,870743,939
Events in quadrant C5,003,621684,779
Events in quadrant D8,032,780625,523

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148731
B0162901
C0196481
D0289021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7313450.615343%
B73141231.681706%
C73145237.150670%
D7314147420.153131%

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 9038 7314 0 0 0.00% 0.00%
B 9039 7315 22 22 0.24% 0.30%
C 9039 7315 370 370 4.09% 5.06%
D 9039 7314 1301 1301 14.39% 17.79%

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 13 254 12770 66.74 880 862 178.4
A 3 137 7655 38.07 880 862 178.4
A 0 226 7457 36.96 880 862 178.4
B 0 189 298625 1789.97 878 855 166.4
B 5 172 44950 265.07 878 855 166.4
B 0 229 32803 192.05 878 855 166.4
C 2 16 1610933 8358.73 826 831 192.6
C 14 238 128554 663.06 826 831 192.6
C 7 247 19229 95.51 826 831 192.6
D 1 52 3886592 20469.55 781 757 189.8
D 9 35 917415 4828.71 781 757 189.8
D 12 233 88559 462.52 781 757 189.8

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