ASTROSAT CZTI

Data Quality Report

Orbit 16918

Creation date: 2024-06-27T17:29:29.079888
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_030T01_9000002512_16918cztM0_level2.evt modeM0/AS1T03_030T01_9000002512_16918cztM0_level2_quad_clean.evt
Size (bytes)677,378,88072,224,640
Size646.0 MB 68.9 MB
Events in quadrant A10,064,620367,200
Events in quadrant B3,441,335475,476
Events in quadrant C3,235,376449,637
Events in quadrant D3,333,136440,573

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0344462
B0142443
C0135652
D0140802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6497278142.804371%
B6496781.200739%
C6496430.661946%
D6496160.246305%

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 7703 6499 1985 1985 25.77% 30.54%
B 7702 6498 31 31 0.40% 0.48%
C 7702 6498 0 0 0.00% 0.00%
D 7702 6498 6 6 0.08% 0.09%

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 15 174 7389910 53019.75 695 681 139.4
A 0 226 6055 38.56 695 681 139.4
A 12 194 5051 31.36 695 681 139.4
B 15 35 146072 931.88 817 796 155.9
B 4 216 66844 423.67 817 796 155.9
B 12 111 18053 110.7 817 796 155.9
C 14 238 121331 664.66 778 788 181.4
C 3 233 73202 399.28 778 788 181.4
C 13 61 5465 25.79 778 788 181.4
D 1 52 240247 1259.8 782 761 190.1
D 2 152 98854 516.01 782 761 190.1
D 15 145 26646 136.17 782 761 190.1

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