ASTROSAT CZTI

Data Quality Report

Orbit 27888

Creation date: 2024-06-27T19:45:37.950205
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_048T01_9000004028_27888cztM0_level2.evt modeM0/AS1A10_048T01_9000004028_27888cztM0_level2_quad_clean.evt
Size (bytes)487,719,36066,873,600
Size465.1 MB 63.8 MB
Events in quadrant A3,367,136402,368
Events in quadrant B3,317,406403,194
Events in quadrant C3,284,665386,080
Events in quadrant D4,353,521372,960

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142530
B0138830
C0139340
D0173430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6604520.787402%
B6605671.014383%
C66051091.650265%
D66042333.528165%

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 7584 6604 0 0 0.00% 0.00%
B 7585 6605 3 3 0.04% 0.05%
C 7585 6605 0 0 0.00% 0.00%
D 7584 6604 85 85 1.12% 1.29%

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 6 16 169080 1008.75 827 811 166.8
A 13 254 10092 55.64 827 811 166.8
A 3 137 7918 42.61 827 811 166.8
B 10 245 51682 323.65 825 805 157.2
B 0 230 29399 181.9 825 805 157.2
B 12 111 19480 118.8 825 805 157.2
C 14 238 127876 682.93 797 803 186.1
C 3 233 40154 211.49 797 803 186.1
C 15 208 6368 29.91 797 803 186.1
D 7 238 691111 3643.06 795 774 189.5
D 1 52 603626 3181.39 795 774 189.5
D 7 80 35245 181.91 795 774 189.5

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