ASTROSAT CZTI

Data Quality Report

Orbit 11223

Creation date: 2024-06-27T16:09:59.444570
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/AS1T01_200T01_9000001638_11223cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11223cztM0_level2_quad_clean.evt
Size (bytes)782,925,120120,936,960
Size746.7 MB 115.3 MB
Events in quadrant A10,337,369677,049
Events in quadrant B3,816,407853,715
Events in quadrant C3,611,568834,373
Events in quadrant D5,456,625792,599

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357242
B0160801
C0160161
D0210141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7238258335.686654%
B72381782.459243%
C72382533.495441%
D72382823.896104%

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 7538 7239 1833 1833 24.32% 25.32%
B 7538 7239 46 46 0.61% 0.64%
C 7538 7239 113 113 1.50% 1.56%
D 7538 7239 191 191 2.53% 2.64%

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 14 238 3886372 27338.01 692 676 142.1
A 8 5 3607342 25374.88 692 676 142.1
A 15 174 94470 659.89 692 676 142.1
B 4 239 384958 2442.18 820 798 157.3
B 3 189 81300 511.77 820 798 157.3
B 15 204 78488 493.89 820 798 157.3
C 4 254 540725 2978.19 784 786 181.3
C 14 234 6728 32.77 784 786 181.3
C 13 61 5900 28.21 784 786 181.3
D 1 52 1167580 6204.59 787 763 188.1
D 8 195 488559 2593.87 787 763 188.1
D 14 34 296409 1572.11 787 763 188.1

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