ASTROSAT CZTI

Data Quality Report

Orbit 15962

Creation date: 2024-06-27T17:15:44.719486
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/AS1T02_087T01_9000002352_15962cztM0_level2.evt modeM0/AS1T02_087T01_9000002352_15962cztM0_level2_quad_clean.evt
Size (bytes)438,537,600104,394,240
Size418.2 MB 99.6 MB
Events in quadrant A3,159,412698,773
Events in quadrant B3,385,765701,027
Events in quadrant C3,235,777663,289
Events in quadrant D3,068,158655,078

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135462
B0139541
C0135861
D0133711

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6360540.849057%
B6360460.723270%
C6360921.446541%
D6360380.597484%

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 7466 6361 0 0 0.00% 0.00%
B 7466 6362 1 1 0.01% 0.02%
C 7466 6361 14 14 0.19% 0.22%
D 7466 6361 4 4 0.05% 0.06%

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 13 210 11600 66.1 813 797 163.4
A 15 239 11413 64.95 813 797 163.4
A 0 226 7262 39.56 813 797 163.4
B 5 65 146173 944.51 803 783 153.9
B 0 219 29721 187.99 803 783 153.9
B 12 111 17504 108.63 803 783 153.9
C 3 233 128307 717.07 764 771 177.9
C 14 238 116739 652.03 764 771 177.9
C 13 61 5593 27.11 764 771 177.9
D 12 110 29774 149.7 785 762 193.8
D 2 234 26247 131.5 785 762 193.8
D 2 152 22058 109.89 785 762 193.8

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