ASTROSAT CZTI

Data Quality Report

Orbit 26863

Creation date: 2024-06-27T19:33:47.729166
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_145T01_9000003870_26863cztM0_level2.evt modeM0/AS1A09_145T01_9000003870_26863cztM0_level2_quad_clean.evt
Size (bytes)360,305,28048,090,240
Size343.6 MB 45.9 MB
Events in quadrant A1,899,219318,463
Events in quadrant B4,998,683307,460
Events in quadrant C1,685,148313,538
Events in quadrant D2,120,702299,168

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075660
B0169480
C068300
D082770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3045431.412151%
B3045177958.423645%
C3045481.576355%
D30451173.842365%

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 4295 3046 10 10 0.23% 0.33%
B 4295 3045 1607 1607 37.42% 52.78%
C 4295 3046 0 0 0.00% 0.00%
D 4295 3046 70 70 1.63% 2.30%

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 0 13 256848 2957.01 426 419 86.7
A 13 254 4961 52.38 426 419 86.7
A 3 137 3825 39.28 426 419 86.7
B 5 31 1265534 19293.88 340 333 65.6
B 5 15 1219390 18590.2 340 333 65.6
B 5 14 1137740 17345.06 340 333 65.6
C 14 238 67499 689.08 411 414 97.4
C 2 16 6468 62.19 411 414 97.4
C 14 176 5510 52.34 411 414 97.4
D 7 80 231252 2396.61 406 398 96.3
D 2 250 146509 1516.85 406 398 96.3
D 11 176 127570 1320.24 406 398 96.3

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