ASTROSAT CZTI

Data Quality Report

Orbit 41884

Creation date: 2024-06-27T22:34:22.076312
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_101T04_9000005714_41884cztM0_level2.fits modeM0/AS1A12_101T04_9000005714_41884cztM0_level2_quad_clean.evt
Size (bytes)157,029,12028,848,960
Size149.8 MB 27.5 MB
Events in quadrant A1,573,334188,245
Events in quadrant B862,677208,141
Events in quadrant C1,229,269178,421
Events in quadrant D2,005,185167,903

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058692
B036781
C047001
D072041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179918310.172318%
B179960.333519%
C17991377.615342%
D179918010.005559%

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 3350 1800 102 102 3.04% 5.67%
B 3350 1800 0 0 0.00% 0.00%
C 3350 1800 132 132 3.94% 7.33%
D 3350 1800 200 200 5.97% 11.11%

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 24 586774 13660.49 198 193 42.9
A 10 83 203017 4723.43 198 193 42.9
A 14 250 15303 351.89 198 193 42.9
B 0 156 49152 1185.82 203 198 41.3
B 4 141 5332 124.36 203 198 41.3
B 12 111 5154 120.05 203 198 41.3
C 0 10 408985 8955.3 186 186 45.6
C 15 214 71089 1553.23 186 186 45.6
C 0 15 20752 450.53 186 186 45.6
D 12 79 793682 16103.78 192 187 49.3
D 5 222 244808 4964.52 192 187 49.3
D 12 6 116336 2357.21 192 187 49.3

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