ASTROSAT CZTI

Data Quality Report

Orbit 40744

Creation date: 2024-06-27T22:19:53.169922
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_066T01_9000005562_40744cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40744cztM0_level2_quad_clean.evt
Size (bytes)1,309,109,760232,332,480
Size1.2 GB 221.6 MB
Events in quadrant A8,773,4701,664,267
Events in quadrant B7,676,4541,685,406
Events in quadrant C17,358,3471,369,366
Events in quadrant D13,456,5831,248,766

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0351114
B0330453
C0620933
D0506553

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15440340.220207%
B154401591.029793%
C15440266517.260363%
D15440284018.393782%

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 19618 15443 13 13 0.07% 0.08%
B 19618 15443 83 83 0.42% 0.54%
C 19618 15442 2553 2553 13.01% 16.53%
D 19618 15443 837 837 4.27% 5.42%

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 1291795 3690.81 1715 1679 349.5
A 6 10 412821 1176.21 1715 1679 349.5
A 12 189 397911 1133.55 1715 1679 349.5
B 0 229 454881 1396.29 1698 1649 324.6
B 15 85 203112 620.65 1698 1649 324.6
B 4 170 138002 420.07 1698 1649 324.6
C 9 187 10167541 27997.42 1565 1575 363.1
C 15 214 613261 1684.6 1565 1575 363.1
C 14 254 404975 1110.98 1565 1575 363.1
D 12 128 5298224 13728.19 1545 1501 385.8
D 2 249 496692 1283.45 1545 1501 385.8
D 12 191 482375 1246.34 1545 1501 385.8

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