ASTROSAT CZTI

Data Quality Report

Orbit 25688

Creation date: 2024-06-27T19:20:25.456082
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_043T01_9000003744_25688cztM0_level2.evt modeM0/AS1A09_043T01_9000003744_25688cztM0_level2_quad_clean.evt
Size (bytes)188,516,16048,309,120
Size179.8 MB 46.1 MB
Events in quadrant A1,239,269332,686
Events in quadrant B1,205,223334,281
Events in quadrant C1,168,001314,703
Events in quadrant D1,929,944306,552

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052440
B051510
C050850
D074920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2427110.453234%
B242770.288422%
C2427180.741656%
D2427301.236094%

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 2427 2427 4 4 0.16% 0.16%
B 2427 2427 0 0 0.00% 0.00%
C 2427 2427 0 0 0.00% 0.00%
D 2427 2427 23 23 0.95% 0.95%

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 0 13 54165 854.29 307 301 63.1
A 13 254 3786 55.27 307 301 63.1
A 3 137 2738 38.65 307 301 63.1
B 0 245 18111 300.16 300 293 59.4
B 0 190 9188 149.84 300 293 59.4
B 12 111 6864 110.69 300 293 59.4
C 14 238 46399 685.19 285 286 67.3
C 3 233 10441 150.89 285 286 67.3
C 13 61 1909 24.12 285 286 67.3
D 1 52 606994 8237.82 293 284 73.6
D 8 195 131688 1784.18 293 284 73.6
D 2 244 31408 422.59 293 284 73.6

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