ASTROSAT CZTI

Data Quality Report

Orbit 14627

Creation date: 2024-06-27T16:57:40.610258
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/AS1G08_026T01_9000002154_14627cztM0_level2.evt modeM0/AS1G08_026T01_9000002154_14627cztM0_level2_quad_clean.evt
Size (bytes)1,421,821,440210,680,640
Size1.3 GB 200.9 MB
Events in quadrant A9,265,3881,311,687
Events in quadrant B8,995,3841,311,946
Events in quadrant C13,525,3961,269,767
Events in quadrant D10,058,2101,245,213

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387854
B0380943
C0540153
D0424103

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180182131.182151%
B180182381.320901%
C180182001.110001%
D180188204.551005%

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 19854 18019 5 5 0.03% 0.03%
B 19854 18019 17 17 0.09% 0.09%
C 19854 18019 1 1 0.01% 0.01%
D 19854 18019 500 500 2.52% 2.77%

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 288930 661.5 2149 2104 433.6
A 1 162 274089 627.27 2149 2104 433.6
A 1 178 127315 288.77 2149 2104 433.6
B 0 189 203902 489.83 2141 2083 412.0
B 0 229 149484 357.76 2141 2083 412.0
B 4 173 75746 178.79 2141 2083 412.0
C 3 233 5429439 11315.49 2067 2074 479.6
C 3 234 29353 56.87 2067 2074 479.6
C 13 61 14811 26.56 2067 2074 479.6
D 10 199 1964300 4057.89 2040 1987 483.6
D 12 110 185199 378.87 2040 1987 483.6
D 2 234 66170 132.72 2040 1987 483.6

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