ASTROSAT CZTI

Data Quality Report

Orbit 18883

Creation date: 2024-06-27T17:56:04.495672
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/AS1A06_003T07_9000002818_18883cztM0_level2.evt modeM0/AS1A06_003T07_9000002818_18883cztM0_level2_quad_clean.evt
Size (bytes)1,418,506,560246,893,760
Size1.3 GB 235.5 MB
Events in quadrant A11,138,3391,565,505
Events in quadrant B8,581,2351,616,235
Events in quadrant C8,319,7571,568,445
Events in quadrant D13,702,3771,484,027

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0453983
B0377723
C0368313
D0531893

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180337874.364221%
B180331290.715355%
C180341821.009205%
D1803411946.620827%

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 20068 18036 592 592 2.95% 3.28%
B 20068 18036 10 10 0.05% 0.06%
C 20069 18037 1 1 0.00% 0.01%
D 20069 18037 915 915 4.56% 5.07%

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 6 16 3029972 7245.48 2071 2029 417.9
A 0 13 43472 99.17 2071 2029 417.9
A 12 96 37781 85.55 2071 2029 417.9
B 0 189 139879 346.08 2100 2040 398.3
B 7 220 73538 179.51 2100 2040 398.3
B 0 230 54574 131.9 2100 2040 398.3
C 14 238 316987 665.86 2027 2035 473.0
C 3 233 41415 83.26 2027 2035 473.0
C 8 128 21475 41.1 2027 2035 473.0
D 12 218 1918610 3942.39 2002 1945 486.2
D 7 238 1440359 2958.67 2002 1945 486.2
D 12 1 1206788 2478.24 2002 1945 486.2

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