ASTROSAT CZTI

Data Quality Report

Orbit 20190313_A05_226T06_9000002792_level2

Creation date: 2025-11-28T18:49:23.560570
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_226T06_9000002792cztM0_level2.fits modeM0/AS1A05_226T06_9000002792cztM0_level2_quad_clean.evt
Size (bytes)201,072,960170,262,720
Size191.8 MB 162.4 MB
Events in quadrant A1,275,9101,024,479
Events in quadrant B1,212,1421,021,225
Events in quadrant C1,216,264951,079
Events in quadrant D1,059,644833,134

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411460
B0411910
C0423660
D0546060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192452331.210704%
B192452501.299039%
C192453821.984931%
D192459324.842816%

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 23595 19242 0 0 0.00% 0.00%
B 23595 19242 0 0 0.00% 0.00%
C 23595 19243 0 0 0.00% 0.00%
D 23595 19208 0 0 0.00% 0.00%

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 7 110 1061 9.02 333 314 82.8
A 0 29 1030 8.65 333 314 82.8
A 9 19 955 7.74 333 314 82.8
B 2 9 926 9.66 320 306 64.2
B 2 8 818 7.98 320 306 64.2
B 5 225 805 7.77 320 306 64.2
C 3 126 841 6.55 321 302 82.2
C 12 249 806 6.13 321 302 82.2
C 12 250 804 6.1 321 302 82.2
D 10 190 760 6.05 302 276 80.0
D 3 14 757 6.01 302 276 80.0
D 7 3 740 5.8 302 276 80.0

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