ASTROSAT CZTI

Data Quality Report

Orbit 33136

Creation date: 2024-06-27T20:45:21.678122
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/AS1A11_096T01_9000004766_33136cztM0_level2.evt modeM0/AS1A11_096T01_9000004766_33136cztM0_level2_quad_clean.evt
Size (bytes)501,016,32080,196,480
Size477.8 MB 76.5 MB
Events in quadrant A2,400,057543,287
Events in quadrant B3,179,523545,459
Events in quadrant C2,943,671526,553
Events in quadrant D6,308,180459,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102223
B0126522
C0119172
D0223272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A504760.118883%
B50471583.130573%
C50471392.754111%
D504778615.573608%

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 7050 5048 0 0 0.00% 0.00%
B 7050 5048 72 72 1.02% 1.43%
C 7050 5048 107 107 1.52% 2.12%
D 7050 5048 687 687 9.74% 13.61%

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 13 6 9841 74.96 615 604 123.2
A 13 254 9759 74.29 615 604 123.2
A 14 235 9404 71.41 615 604 123.2
B 5 172 314664 2706.0 610 596 116.1
B 15 33 129594 1111.44 610 596 116.1
B 5 200 65450 558.78 610 596 116.1
C 0 10 312326 2326.55 582 588 134.0
C 7 221 202311 1505.49 582 588 134.0
C 1 241 101610 753.94 582 588 134.0
D 8 195 1474858 10338.0 551 540 142.6
D 2 250 1268391 8890.25 551 540 142.6
D 2 249 307763 2154.27 551 540 142.6

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