ASTROSAT CZTI

Data Quality Report

Orbit 23496

Creation date: 2024-06-27T18:55:13.621669
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/AS1A07_100T02_9000003476_23496cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23496cztM0_level2_quad_clean.evt
Size (bytes)855,887,040160,562,880
Size816.2 MB 153.1 MB
Events in quadrant A5,592,9821,030,297
Events in quadrant B6,319,0181,037,559
Events in quadrant C6,878,586992,956
Events in quadrant D6,330,781985,408

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242602
B0261272
C0278752
D0265102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118032462.084216%
B118042992.533040%
C118044063.439512%
D118042772.346662%

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 13008 11803 0 0 0.00% 0.00%
B 13009 11804 15 15 0.12% 0.13%
C 13009 11804 39 39 0.30% 0.33%
D 13009 11804 90 90 0.69% 0.76%

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 13 254 20856 67.17 1443 1413 289.4
A 0 226 12573 38.56 1443 1413 289.4
A 3 137 12033 36.69 1443 1413 289.4
B 0 189 420902 1570.15 1432 1398 267.2
B 0 229 71256 261.47 1432 1398 267.2
B 0 228 50385 183.35 1432 1398 267.2
C 8 208 937854 2930.17 1384 1392 319.6
C 14 238 217049 674.79 1384 1392 319.6
C 0 207 135162 418.56 1384 1392 319.6
D 1 52 516619 1523.6 1411 1374 338.2
D 13 174 198156 581.89 1411 1374 338.2
D 12 233 163496 479.4 1411 1374 338.2

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