ASTROSAT CZTI

Data Quality Report

Orbit 27356

Creation date: 2024-06-27T19:39:15.616338
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_038T12_9000003926_27356cztM0_level2.evt modeM0/AS1A09_038T12_9000003926_27356cztM0_level2_quad_clean.evt
Size (bytes)172,175,04037,298,880
Size164.2 MB 35.6 MB
Events in quadrant A984,824264,976
Events in quadrant B982,558270,682
Events in quadrant C1,232,872248,052
Events in quadrant D1,904,362228,669

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040510
B040400
C048860
D068750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1586543.404792%
B1586805.044136%
C158616910.655738%
D158652433.039092%

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 2831 1587 0 0 0.00% 0.00%
B 2831 1587 1 1 0.04% 0.06%
C 2831 1586 37 37 1.31% 2.33%
D 2831 1587 462 462 16.32% 29.11%

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 8 192 5595 105.93 253 249 50.5
A 13 254 2379 42.2 253 249 50.5
A 0 226 2230 39.25 253 249 50.5
B 12 111 5080 101.57 250 245 47.6
B 0 190 4765 94.96 250 245 47.6
B 11 111 4597 91.43 250 245 47.6
C 2 16 205164 3670.09 241 244 55.8
C 15 208 48283 860.37 241 244 55.8
C 14 238 38821 690.91 241 244 55.8
D 1 52 1065715 20502.73 219 215 52.0
D 2 250 6765 126.04 219 215 52.0
D 2 234 4571 83.82 219 215 52.0

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