ASTROSAT CZTI

Data Quality Report

Orbit 29177

Creation date: 2024-06-27T20:01:08.936716
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/AS1A10_099T01_9000004184_29177cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29177cztM0_level2_quad_clean.evt
Size (bytes)464,112,00072,912,960
Size442.6 MB 69.5 MB
Events in quadrant A3,118,939449,956
Events in quadrant B3,255,426457,562
Events in quadrant C3,264,352437,509
Events in quadrant D3,990,208424,205

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131511
B0134921
C0134111
D0159962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6289410.651932%
B6290570.906200%
C6290881.399046%
D62891251.987597%

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 7340 6290 0 0 0.00% 0.00%
B 7341 6291 5 5 0.07% 0.08%
C 7341 6291 0 0 0.00% 0.00%
D 7340 6290 74 74 1.01% 1.18%

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 13 254 11655 66.47 808 790 163.5
A 3 137 7772 42.71 808 790 163.5
A 0 226 6809 36.82 808 790 163.5
B 0 183 94477 615.05 797 779 152.3
B 12 111 18884 118.85 797 779 152.3
B 11 111 17441 109.37 797 779 152.3
C 14 238 125535 687.82 778 784 181.4
C 3 233 91018 497.51 778 784 181.4
C 2 114 14213 74.04 778 784 181.4
D 8 195 360207 1921.19 783 762 187.1
D 1 52 350664 1870.19 783 762 187.1
D 13 153 224942 1198.22 783 762 187.1

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