ASTROSAT CZTI

Data Quality Report

Orbit 11521

Creation date: 2024-06-27T16:14:09.552687
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/AS1A04_021T06_9000001688_11521cztM0_level2.evt modeM0/AS1A04_021T06_9000001688_11521cztM0_level2_quad_clean.evt
Size (bytes)616,510,08096,811,200
Size587.9 MB 92.3 MB
Events in quadrant A5,403,143610,563
Events in quadrant B5,367,277608,422
Events in quadrant C3,131,071656,429
Events in quadrant D4,343,731616,880

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204763
B0202322
C0131062
D0171262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A629365010.328937%
B629366710.599078%
C6293631.001112%
D62931221.938662%

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 7594 6295 343 343 4.52% 5.45%
B 7594 6295 395 395 5.20% 6.27%
C 7594 6295 0 0 0.00% 0.00%
D 7594 6295 21 21 0.28% 0.33%

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 2137456 13340.18 801 784 160.2
A 1 162 53425 328.66 801 784 160.2
A 9 143 43376 265.92 801 784 160.2
B 4 239 1279623 8593.7 797 781 148.8
B 3 64 677775 4549.34 797 781 148.8
B 11 51 143516 959.17 797 781 148.8
C 13 61 5705 26.58 801 807 184.2
C 7 87 5033 22.94 801 807 184.2
C 12 4 4844 21.91 801 807 184.2
D 13 152 449300 2359.56 805 787 190.1
D 8 195 260311 1365.31 805 787 190.1
D 1 52 207105 1085.4 805 787 190.1

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