ASTROSAT CZTI

Data Quality Report

Orbit 35543

Creation date: 2022-04-26T08:55:14.357472
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_046T08_9000005088_35543cztM0_level2.evt modeM0/AS1A11_046T08_9000005088_35543cztM0_level2_quad_clean.evt
Size (bytes)341,513,28064,051,200
Size325.7 MB 61.1 MB
Events in quadrant A2,247,005401,505
Events in quadrant B2,585,264407,196
Events in quadrant C2,592,148415,783
Events in quadrant D2,609,844396,401

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095661
B0105840
C0103640
D0107140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4531180.397263%
B4531701.544913%
C4531100.220702%
D4531861.898036%

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 4531 4531 14 14 0.31% 0.31%
B 4531 4531 39 39 0.86% 0.86%
C 4531 4531 10 10 0.22% 0.22%
D 4531 4531 65 65 1.43% 1.43%

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 15 169 134889 1283.46 511 500 104.7
A 10 83 65281 618.68 511 500 104.7
A 9 143 56164 531.61 511 500 104.7
B 5 236 207463 2124.1 507 495 97.4
B 5 172 155886 1594.77 507 495 97.4
B 0 190 81211 828.38 507 495 97.4
C 15 214 198562 1686.22 504 506 117.5
C 14 128 188246 1598.39 504 506 117.5
C 0 10 175493 1489.81 504 506 117.5
D 10 118 157343 1301.17 499 484 120.6
D 8 195 117571 971.26 499 484 120.6
D 2 250 82903 683.68 499 484 120.6

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