ASTROSAT CZTI

Data Quality Report

Orbit 22155

Creation date: 2024-06-27T18:37:32.209838
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/AS1T03_145T01_9000003278_22155cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22155cztM0_level2_quad_clean.evt
Size (bytes)436,656,96093,182,400
Size416.4 MB 88.9 MB
Events in quadrant A3,124,717596,472
Events in quadrant B3,226,074607,138
Events in quadrant C3,179,538578,101
Events in quadrant D3,234,881569,873

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136993
B0138722
C0136992
D0143232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6759160.236721%
B6759380.562213%
C6759500.739754%
D6759520.769345%

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 7684 6760 0 0 0.00% 0.00%
B 7684 6760 4 4 0.05% 0.06%
C 7684 6760 0 0 0.00% 0.00%
D 7684 6760 32 32 0.42% 0.47%

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 3 1 16543 96.92 805 788 162.6
A 13 254 10923 62.35 805 788 162.6
A 3 137 7137 39.06 805 788 162.6
B 3 64 28815 179.65 808 785 156.0
B 12 111 19282 118.55 808 785 156.0
B 11 111 16959 103.66 808 785 156.0
C 14 238 123958 676.49 778 785 182.1
C 9 54 10088 51.09 778 785 182.1
C 10 22 9959 50.39 778 785 182.1
D 1 52 169011 887.29 783 760 189.6
D 13 104 55907 290.82 783 760 189.6
D 2 234 26331 134.85 783 760 189.6

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