ASTROSAT CZTI

Data Quality Report

Orbit 37421

Creation date: 2024-06-27T21:39:46.454849
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_002T01_9000005322_37421cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37421cztM0_level2_quad_clean.evt
Size (bytes)449,444,16096,454,080
Size428.6 MB 92.0 MB
Events in quadrant A2,879,413648,424
Events in quadrant B3,113,354661,299
Events in quadrant C2,786,558664,199
Events in quadrant D4,491,868595,702

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115193
B0123582
C0110702
D0165512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5011801.596488%
B50111382.753941%
C5011601.197366%
D501162712.512473%

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 7134 5012 59 59 0.83% 1.18%
B 7134 5012 91 91 1.28% 1.82%
C 7134 5012 55 55 0.77% 1.10%
D 7134 5012 600 600 8.41% 11.97%

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 269389 2264.76 595 585 118.7
A 6 10 150541 1263.43 595 585 118.7
A 15 222 101835 853.07 595 585 118.7
B 5 255 576755 5246.72 591 577 109.8
B 5 172 83285 753.14 591 577 109.8
B 5 200 74485 673.01 591 577 109.8
C 15 214 216185 1588.21 589 594 135.7
C 14 254 179448 1317.57 589 594 135.7
C 0 10 81293 594.49 589 594 135.7
D 10 253 1543230 11279.12 568 553 136.8
D 12 227 186266 1357.82 568 553 136.8
D 13 249 182480 1330.14 568 553 136.8

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