ASTROSAT CZTI

Data Quality Report

Orbit 39800

Creation date: 2024-06-27T22:09:07.591248
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/AS1A12_022T01_9000005498_39800cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39800cztM0_level2_quad_clean.evt
Size (bytes)561,818,88090,253,440
Size535.8 MB 86.1 MB
Events in quadrant A3,165,412656,138
Events in quadrant B3,412,300657,878
Events in quadrant C9,909,879434,153
Events in quadrant D3,846,852568,537

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133273
B0144352
C0335922
D0156022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5952310.520833%
B59521652.772177%
C5952232739.096102%
D59522874.821909%

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 7264 5953 20 20 0.28% 0.34%
B 7264 5953 93 93 1.28% 1.56%
C 7264 5953 2040 2040 28.08% 34.27%
D 7264 5953 145 145 2.00% 2.44%

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 10 83 489423 3656.08 645 631 133.7
A 9 143 86281 640.65 645 631 133.7
A 6 10 50522 373.18 645 631 133.7
B 5 255 372924 3001.5 637 618 124.0
B 5 172 245727 1976.05 637 618 124.0
B 4 171 181829 1460.91 637 618 124.0
C 9 187 6735258 53721.34 534 537 125.4
C 15 208 849351 6770.8 534 537 125.4
C 15 214 214249 1704.73 534 537 125.4
D 12 227 549531 3595.22 617 597 152.7
D 2 249 209740 1369.77 617 597 152.7
D 12 233 186689 1218.8 617 597 152.7

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