ASTROSAT CZTI

Data Quality Report

Orbit 15088

Creation date: 2024-06-27T17:03:35.814395
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/AS1G08_028T01_9000002220_15088cztM0_level2.evt modeM0/AS1G08_028T01_9000002220_15088cztM0_level2_quad_clean.evt
Size (bytes)200,733,12022,043,520
Size191.4 MB 21.0 MB
Events in quadrant A1,413,963118,227
Events in quadrant B1,523,750119,627
Events in quadrant C1,564,968114,543
Events in quadrant D1,382,568112,654

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059132
B062291
C062871
D060571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28321174.131356%
B28321425.014124%
C28321083.813559%
D28321164.096045%

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 3188 2833 0 0 0.00% 0.00%
B 3188 2833 1 1 0.03% 0.04%
C 3188 2833 0 0 0.00% 0.00%
D 3188 2833 9 9 0.28% 0.32%

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 12 189 3659 42.81 366 358 77.1
A 0 226 3219 37.1 366 358 77.1
A 3 137 2806 31.75 366 358 77.1
B 3 64 96417 1314.75 364 354 73.1
B 12 111 8950 117.65 364 354 73.1
B 11 111 7773 101.54 364 354 73.1
C 3 233 194924 2330.48 350 351 83.5
C 7 247 3379 36.27 350 351 83.5
C 13 61 2487 25.58 350 351 83.5
D 13 104 52134 592.21 351 339 87.5
D 2 234 9864 108.91 351 339 87.5
D 14 226 3505 36.2 351 339 87.5

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