ASTROSAT CZTI

Data Quality Report

Orbit 34710

Creation date: 2024-06-27T21:04:04.170416
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/AS1A09_038T36_9000004976_34710cztM0_level2.evt modeM0/AS1A09_038T36_9000004976_34710cztM0_level2_quad_clean.evt
Size (bytes)554,005,440114,048,000
Size528.3 MB 108.8 MB
Events in quadrant A5,900,606722,803
Events in quadrant B2,908,502816,273
Events in quadrant C3,103,758796,714
Events in quadrant D4,502,001742,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209833
B0118022
C0122212
D0170282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5369138925.870739%
B5369340.633265%
C5369891.657664%
D53691382.570311%

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 7311 5370 1163 1163 15.91% 21.66%
B 7311 5370 11 11 0.15% 0.20%
C 7311 5370 62 62 0.85% 1.15%
D 7311 5370 101 101 1.38% 1.88%

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 15 169 3256422 26139.11 628 618 124.6
A 7 16 105121 839.0 628 618 124.6
A 9 143 50590 401.2 628 618 124.6
B 0 189 56689 448.05 675 659 125.1
B 5 172 53643 423.69 675 659 125.1
B 4 171 47847 377.35 675 659 125.1
C 0 10 231814 1530.33 666 672 151.0
C 15 214 228408 1507.78 666 672 151.0
C 15 159 16416 104.24 666 672 151.0
D 8 195 1128410 6404.94 654 641 176.1
D 7 38 176752 1000.19 654 641 176.1
D 13 249 176658 999.65 654 641 176.1

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