ASTROSAT CZTI

Data Quality Report

Orbit 46719

Creation date: 2024-06-27T23:26:47.877310
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/AS1A13_037T01_9000006256_46719cztM0_level2.fits modeM0/AS1A13_037T01_9000006256_46719cztM0_level2_quad_clean.evt
Size (bytes)101,712,96021,173,760
Size97.0 MB 20.2 MB
Events in quadrant A1,360,578145,190
Events in quadrant B871,749143,810
Events in quadrant C756,106135,955
Events in quadrant D684,526129,045

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048510
B033500
C029660
D027520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1151272.345786%
B1152756.510417%
C1151403.475239%
D1151141.216334%

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 1151 1151 1 1 0.09% 0.09%
B 1152 1152 41 41 3.56% 3.56%
C 1151 1151 35 35 3.04% 3.04%
D 1151 1151 11 11 0.96% 0.96%

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 752869 23318.65 146 143 32.3
A 0 243 16245 498.82 146 143 32.3
A 15 235 9629 293.87 146 143 32.3
B 5 172 129225 4372.17 144 141 29.5
B 4 171 104431 3532.38 144 141 29.5
B 5 32 24747 833.42 144 141 29.5
C 12 2 93623 2715.44 141 141 34.4
C 5 250 79227 2297.27 141 141 34.4
C 1 241 25351 732.29 141 141 34.4
D 2 249 61573 1577.02 146 141 39.0
D 1 52 31753 811.51 146 141 39.0
D 12 233 23705 604.9 146 141 39.0

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