ASTROSAT CZTI

Data Quality Report

Orbit 01146

Creation date: 2024-06-27T14:08:13.422135
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/AS1P01_997T03_9000000216_01146cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01146cztM0_level2_quad_clean.evt
Size (bytes)1,079,585,28098,326,080
Size1.0 GB 93.8 MB
Events in quadrant A7,948,267648,381
Events in quadrant B8,644,429639,809
Events in quadrant C8,191,917618,604
Events in quadrant D7,479,141616,406

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282682
B0303211
C0289931
D0268231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6519911.395920%
B65191171.794754%
C6519971.487958%
D6519841.288541%

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 7024 6519 350 350 4.98% 5.37%
B 7024 6519 628 628 8.94% 9.63%
C 7024 6519 356 356 5.07% 5.46%
D 7024 6519 259 259 3.69% 3.97%

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 15 127 31911 59.8 2062 2079 498.9
A 13 9 10172 16.22 2062 2079 498.9
A 3 111 6419 8.7 2062 2079 498.9
B 5 191 520371 1052.78 2087 2094 492.3
B 15 22 60596 118.84 2087 2094 492.3
B 0 220 42173 81.41 2087 2094 492.3
C 15 241 303812 563.61 1914 1986 535.5
C 12 206 298113 552.97 1914 1986 535.5
C 9 83 66744 120.93 1914 1986 535.5
D 1 239 257779 438.73 1891 1956 583.1
D 2 16 47901 78.79 1891 1956 583.1
D 13 73 27773 44.28 1891 1956 583.1

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