ASTROSAT CZTI

Data Quality Report

Orbit 45518

Creation date: 2024-06-27T23:13:12.756101
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_031T02_9000006100_45518cztM0_level2.fits modeM0/AS1A13_031T02_9000006100_45518cztM0_level2_quad_clean.evt
Size (bytes)194,745,60050,529,600
Size185.7 MB 48.2 MB
Events in quadrant A2,627,167334,272
Events in quadrant B1,424,639357,124
Events in quadrant C1,319,430338,595
Events in quadrant D1,623,086304,646

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097941
B059831
C056581
D066071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27361093.983918%
B2736230.840643%
C273680.292398%
D2736541.973684%

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 2736 2736 8 8 0.29% 0.29%
B 2736 2736 9 9 0.33% 0.33%
C 2736 2736 0 0 0.00% 0.00%
D 2736 2736 22 22 0.80% 0.80%

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 1236911 17861.21 331 325 69.2
A 2 79 48474 695.46 331 325 69.2
A 7 3 38843 556.35 331 325 69.2
B 5 172 60836 916.37 335 326 66.0
B 15 201 24128 360.46 335 326 66.0
B 3 112 9378 137.08 335 326 66.0
C 14 254 6770 81.54 335 337 78.9
C 3 233 5599 66.7 335 337 78.9
C 13 61 2307 24.97 335 337 78.9
D 1 52 201797 2405.36 330 320 83.8
D 2 249 47146 559.04 330 320 83.8
D 11 241 26994 318.45 330 320 83.8

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