ASTROSAT CZTI

Data Quality Report

Orbit 01301

Creation date: 2024-06-27T14:10:38.246484
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/AS1G04_002T02_9000000230_01301cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01301cztM0_level2_quad_clean.evt
Size (bytes)1,323,051,84095,149,440
Size1.2 GB 90.7 MB
Events in quadrant A8,807,140597,084
Events in quadrant B8,374,927660,477
Events in quadrant C7,380,928649,356
Events in quadrant D15,094,814537,554

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03070023
B0293242
C0263212
D0495042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A623964310.306139%
B6241751.201730%
C624150.080115%
D6241203032.526839%

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 7493 6241 917 917 12.24% 14.69%
B 7493 6243 518 518 6.91% 8.30%
C 7493 6243 141 141 1.88% 2.26%
D 7493 6242 4408 4408 58.83% 70.62%

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 4 32 2080075 4977.24 1739 1751 417.6
A 15 127 31603 71.49 1739 1751 417.6
A 0 5 13471 28.07 1739 1751 417.6
B 8 4 589674 1300.44 1955 1965 451.9
B 12 52 133265 290.53 1955 1965 451.9
B 6 53 129437 282.06 1955 1965 451.9
C 15 241 320022 642.37 1794 1853 495.3
C 3 111 22923 42.54 1794 1853 495.3
C 3 79 16331 29.23 1794 1853 495.3
D 13 169 8675125 18223.42 1540 1596 476.0
D 10 84 455356 953.37 1540 1596 476.0
D 12 22 105939 219.23 1540 1596 476.0

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