ASTROSAT CZTI

Data Quality Report

Orbit 13079

Creation date: 2024-06-27T16:36:02.112436
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_067T01_9000001926_13079cztM0_level2.evt modeM0/AS1A04_067T01_9000001926_13079cztM0_level2_quad_clean.evt
Size (bytes)1,752,586,560250,591,680
Size1.6 GB 239.0 MB
Events in quadrant A9,837,8991,650,267
Events in quadrant B18,506,9411,357,820
Events in quadrant C9,418,2971,669,881
Events in quadrant D14,002,5791,571,430

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421555
B0684584
C0416174
D0553054

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194382271.167816%
B19438525527.034674%
C194382671.373598%
D194387573.894434%

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 22064 19443 37 37 0.17% 0.19%
B 22064 19442 2960 2960 13.42% 15.22%
C 22064 19443 96 96 0.44% 0.49%
D 22064 19443 572 572 2.59% 2.94%

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 15 512659 1126.3 2254 2202 453.2
A 12 189 247971 542.28 2254 2202 453.2
A 15 223 179594 391.41 2254 2202 453.2
B 4 239 10104723 29241.03 1819 1770 345.5
B 0 85 635950 1835.51 1819 1770 345.5
B 3 64 322140 927.25 1819 1770 345.5
C 15 208 821672 1612.48 2201 2210 508.2
C 13 61 16178 27.49 2201 2210 508.2
C 14 234 8999 13.36 2201 2210 508.2
D 1 52 5007684 9618.25 2171 2104 520.4
D 14 34 262581 500.51 2171 2104 520.4
D 10 157 210748 400.91 2171 2104 520.4

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