ASTROSAT CZTI

Data Quality Report

Orbit 15619

Creation date: 2024-06-27T17:11:12.895694
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_031T01_9000002314_15619cztM0_level2.evt modeM0/AS1G08_031T01_9000002314_15619cztM0_level2_quad_clean.evt
Size (bytes)275,388,48039,464,640
Size262.6 MB 37.6 MB
Events in quadrant A1,931,535237,947
Events in quadrant B2,067,362238,342
Events in quadrant C1,918,778227,219
Events in quadrant D2,163,818223,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079101
B084441
C079001
D087751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3786240.633914%
B3786280.739567%
C3786290.765980%
D3786571.505547%

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 3787 3787 1 1 0.03% 0.03%
B 3787 3787 3 3 0.08% 0.08%
C 3787 3787 0 0 0.00% 0.00%
D 3787 3787 34 34 0.90% 0.90%

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 0 226 4514 39.91 498 489 100.9
A 13 248 4490 39.67 498 489 100.9
A 15 222 4431 39.08 498 489 100.9
B 0 189 73118 777.48 490 480 93.4
B 0 197 27782 292.23 490 480 93.4
B 3 209 16336 169.71 490 480 93.4
C 14 238 75479 681.67 470 475 110.0
C 3 233 7027 59.55 470 475 110.0
C 13 61 3399 26.57 470 475 110.0
D 12 110 172217 1468.01 483 471 117.0
D 13 172 83236 707.44 483 471 117.0
D 10 70 29243 245.93 483 471 117.0

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