ASTROSAT CZTI

Data Quality Report

Orbit 09181

Creation date: 2024-06-27T15:42:23.550979
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/AS1C02_041T02_9000001282_09181cztM0_level2.evt modeM0/AS1C02_041T02_9000001282_09181cztM0_level2_quad_clean.evt
Size (bytes)579,559,68085,014,720
Size552.7 MB 81.1 MB
Events in quadrant A4,667,979510,022
Events in quadrant B3,937,868519,394
Events in quadrant C3,735,787508,554
Events in quadrant D4,669,446482,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188902
B0168961
C0166781
D0193561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79634095.136255%
B79633904.897652%
C79633133.930679%
D79636037.572523%

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 8288 7964 7 7 0.08% 0.09%
B 8288 7964 2 2 0.02% 0.03%
C 8288 7964 0 0 0.00% 0.00%
D 8288 7964 276 276 3.33% 3.47%

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 8 5 677664 3435.22 965 941 197.0
A 1 162 144298 727.72 965 941 197.0
A 1 178 33729 166.44 965 941 197.0
B 8 234 46945 246.33 973 949 186.7
B 0 245 27064 139.86 973 949 186.7
B 0 214 22525 115.55 973 949 186.7
C 9 68 37530 166.02 947 948 220.4
C 13 61 7192 28.34 947 948 220.4
C 8 222 3920 13.49 947 948 220.4
D 1 52 841875 3574.27 936 905 235.3
D 6 225 97647 411.17 936 905 235.3
D 2 14 64997 272.4 936 905 235.3

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