ASTROSAT CZTI

Data Quality Report

Orbit 04781

Creation date: 2024-06-27T14:46:57.174247
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/AS1G05_156T09_9000000604_04781cztM0_level2.evt modeM0/AS1G05_156T09_9000000604_04781cztM0_level2_quad_clean.evt
Size (bytes)295,113,60023,734,080
Size281.4 MB 22.6 MB
Events in quadrant A1,416,179138,372
Events in quadrant B1,605,269136,119
Events in quadrant C2,769,193115,325
Events in quadrant D2,951,652124,056

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062532
B066213
C0102073
D0107593

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28511123.928446%
B28501144.000000%
C285057520.175439%
D285037113.017544%

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 3091 2851 1 1 0.03% 0.04%
B 3091 2852 2 2 0.06% 0.07%
C 3091 2851 400 400 12.94% 14.03%
D 3091 2852 276 276 8.93% 9.68%

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 14 111 61151 858.35 338 329 70.9
A 0 50 22211 308.81 338 329 70.9
A 15 14 20020 277.89 338 329 70.9
B 4 80 180260 2617.63 346 336 68.7
B 10 16 38350 553.05 346 336 68.7
B 14 167 36077 519.98 346 336 68.7
C 14 48 1545608 21152.9 306 307 73.1
C 7 247 12987 173.57 306 307 73.1
C 8 128 6208 80.78 306 307 73.1
D 11 132 1539585 19443.39 320 310 79.2
D 2 136 92526 1164.83 320 310 79.2
D 13 235 53868 676.52 320 310 79.2

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