ASTROSAT CZTI

Data Quality Report

Orbit 00649

Creation date: 2024-06-27T14:00:59.878214
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/AS1P01_126T04_9000000092_00649cztM0_level2.evt modeM0/AS1P01_126T04_9000000092_00649cztM0_level2_quad_clean.evt
Size (bytes)759,758,40047,802,240
Size724.6 MB 45.6 MB
Events in quadrant A5,719,532277,035
Events in quadrant B5,777,537281,297
Events in quadrant C5,375,236275,342
Events in quadrant D5,802,602261,446

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205702
B0207002
C0195542
D0208292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501950.099621%
B501970.139470%
C501920.039849%
D5019811.613867%

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 7174 5020 96 96 1.34% 1.91%
B 7174 5020 71 71 0.99% 1.41%
C 7174 5020 37 37 0.52% 0.74%
D 7174 5020 198 198 2.76% 3.94%

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 15 171 28866 85.58 1455 1442 320.5
A 0 69 18466 53.12 1455 1442 320.5
A 0 238 17836 51.16 1455 1442 320.5
B 0 220 29661 81.62 1482 1492 345.1
B 4 172 24995 68.1 1482 1492 345.1
B 5 249 12970 33.26 1482 1492 345.1
C 15 241 9905 22.31 1363 1414 380.6
C 9 52 8011 17.34 1363 1414 380.6
C 7 251 3703 6.01 1363 1414 380.6
D 1 4 302219 753.12 1278 1331 399.5
D 12 237 211062 524.95 1278 1331 399.5
D 13 221 137185 340.04 1278 1331 399.5

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