ASTROSAT CZTI

Data Quality Report

Orbit 17559

Creation date: 2024-06-27T17:37:58.837404
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/AS1A05_012T02_9000002602_17559cztM0_level2.evt modeM0/AS1A05_012T02_9000002602_17559cztM0_level2_quad_clean.evt
Size (bytes)165,087,36025,341,120
Size157.4 MB 24.2 MB
Events in quadrant A1,154,264156,403
Events in quadrant B1,125,754157,535
Events in quadrant C1,164,995151,075
Events in quadrant D1,406,097145,853

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046711
B046061
C046771
D055621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2149693.210796%
B2149803.722662%
C2149833.862262%
D21491275.909725%

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 3339 2149 1 1 0.03% 0.05%
B 3339 2150 0 0 0.00% 0.00%
C 3339 2150 5 5 0.15% 0.23%
D 3339 2150 53 53 1.59% 2.47%

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 14 237 41808 700.75 288 282 59.3
A 11 47 2911 44.36 288 282 59.3
A 0 226 2564 38.51 288 282 59.3
B 12 111 6388 108.67 283 276 56.2
B 11 111 5755 97.42 283 276 56.2
B 14 111 4718 78.98 283 276 56.2
C 14 238 41166 631.58 270 271 64.7
C 3 233 35959 551.17 270 271 64.7
C 5 112 24300 371.1 270 271 64.7
D 7 238 126455 1847.28 275 266 68.3
D 13 189 117486 1715.98 275 266 68.3
D 10 70 60243 878.0 275 266 68.3

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