ASTROSAT CZTI

Data Quality Report

Orbit 25267

Creation date: 2024-06-27T19:15:43.138782
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/AS1A09_027T02_9000003696_25267cztM0_level2.evt modeM0/AS1A09_027T02_9000003696_25267cztM0_level2_quad_clean.evt
Size (bytes)1,186,640,640159,252,480
Size1.1 GB 151.9 MB
Events in quadrant A5,374,9511,066,293
Events in quadrant B11,645,185964,406
Events in quadrant C5,762,3521,026,775
Events in quadrant D12,366,049954,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236310
B0423680
C0245470
D0450420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11705670.572405%
B11705265722.699701%
C117051501.281504%
D117059878.432294%

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 13325 11707 0 0 0.00% 0.00%
B 13325 11706 1568 1568 11.77% 13.39%
C 13325 11707 14 14 0.11% 0.12%
D 13325 11707 766 766 5.75% 6.54%

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 19717 65.08 1390 1358 282.1
A 3 1 14499 46.58 1390 1358 282.1
A 3 137 12395 39.12 1390 1358 282.1
B 3 64 6593973 28030.53 1245 1212 235.2
B 0 190 76549 320.31 1245 1212 235.2
B 0 186 50363 208.98 1245 1212 235.2
C 14 238 209632 674.95 1324 1331 308.6
C 9 54 122209 391.68 1324 1331 308.6
C 3 233 118179 378.62 1324 1331 308.6
D 1 52 2600482 8147.33 1318 1280 319.0
D 8 195 2566779 8041.69 1318 1280 319.0
D 9 35 1836312 5752.0 1318 1280 319.0

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