ASTROSAT CZTI

Data Quality Report

Orbit 15454

Creation date: 2024-06-27T17:08:42.986431
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_032T01_9000002280_15454cztM0_level2.evt modeM0/AS1G08_032T01_9000002280_15454cztM0_level2_quad_clean.evt
Size (bytes)298,215,36044,467,200
Size284.4 MB 42.4 MB
Events in quadrant A1,978,381269,560
Events in quadrant B1,991,245273,885
Events in quadrant C2,034,083262,487
Events in quadrant D2,746,087249,213

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085511
B084801
C084601
D0108871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4129300.726568%
B4129240.581255%
C4129100.242189%
D41291383.342214%

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 4130 4130 5 5 0.12% 0.12%
B 4130 4130 0 0 0.00% 0.00%
C 4130 4130 0 0 0.00% 0.00%
D 4130 4130 132 132 3.20% 3.20%

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 14 238 47054 462.58 497 487 100.7
A 14 237 15602 150.15 497 487 100.7
A 9 143 5336 48.17 497 487 100.7
B 0 230 21378 217.25 495 483 96.2
B 0 189 14501 145.75 495 483 96.2
B 12 111 11412 113.63 495 483 96.2
C 3 233 164432 1496.87 475 479 109.5
C 7 220 9861 85.66 475 479 109.5
C 10 22 5074 41.95 475 479 109.5
D 5 222 501995 4322.66 473 459 116.0
D 1 52 415208 3574.66 473 459 116.0
D 2 234 14246 118.83 473 459 116.0

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