ASTROSAT CZTI

Data Quality Report

Orbit 20026

Creation date: 2024-06-27T18:10:15.453340
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/AS1C04_001T01_9000002984_20026cztM0_level2.evt modeM0/AS1C04_001T01_9000002984_20026cztM0_level2_quad_clean.evt
Size (bytes)978,408,000186,865,920
Size933.1 MB 178.2 MB
Events in quadrant A5,859,3771,246,033
Events in quadrant B6,463,4621,241,240
Events in quadrant C5,737,9171,226,302
Events in quadrant D10,743,1351,099,818

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257347
B0273497
C0251777
D0406237

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A122221381.129111%
B122222171.775487%
C122231541.259920%
D12223205316.796204%

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 13918 12226 48 48 0.34% 0.39%
B 13918 12226 48 48 0.34% 0.39%
C 13918 12226 0 0 0.00% 0.00%
D 13919 12227 1734 1734 12.46% 14.18%

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 14 254 128521 439.98 1434 1399 288.9
A 5 16 102177 348.8 1434 1399 288.9
A 14 238 80655 274.31 1434 1399 288.9
B 7 220 304240 1109.4 1431 1393 273.0
B 0 189 115867 419.34 1431 1393 273.0
B 0 197 111819 404.52 1431 1393 273.0
C 14 238 215347 660.44 1392 1395 324.0
C 3 233 66311 200.39 1392 1395 324.0
C 0 207 26945 78.87 1392 1395 324.0
D 7 38 3861965 12056.59 1326 1289 320.2
D 1 52 799690 2493.34 1326 1289 320.2
D 7 238 490088 1526.48 1326 1289 320.2

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