ASTROSAT CZTI

Data Quality Report

Orbit 12647

Creation date: 2024-06-27T16:30:27.472913
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_071T01_9000001874_12647cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12647cztM0_level2_quad_clean.evt
Size (bytes)307,834,56035,268,480
Size293.6 MB 33.6 MB
Events in quadrant A1,724,541206,820
Events in quadrant B2,403,180201,537
Events in quadrant C1,790,241204,509
Events in quadrant D3,150,504190,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075881
B095481
C078121
D0119441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3720150.403226%
B37201714.596774%
C3720100.268817%
D37203278.790323%

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 3722 3722 0 0 0.00% 0.00%
B 3722 3722 113 113 3.04% 3.04%
C 3722 3722 2 2 0.05% 0.05%
D 3722 3722 327 327 8.79% 8.79%

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 9812 102.26 445 436 91.7
A 0 226 4034 39.24 445 436 91.7
A 12 194 3533 33.78 445 436 91.7
B 4 239 444556 5303.42 437 427 83.7
B 0 197 99373 1181.53 437 427 83.7
B 11 51 96155 1143.11 437 427 83.7
C 15 208 85575 839.1 435 438 101.5
C 14 234 5682 51.68 435 438 101.5
C 13 61 3208 27.3 435 438 101.5
D 1 52 1291203 12824.81 410 398 100.6
D 10 157 243071 2411.08 410 398 100.6
D 13 104 26830 262.62 410 398 100.6

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