ASTROSAT CZTI

Data Quality Report

Orbit 34634

Creation date: 2024-06-27T21:03:01.688863
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/AS1T05_008T01_9000004956_34634cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34634cztM0_level2_quad_clean.evt
Size (bytes)987,145,920136,774,080
Size941.4 MB 130.4 MB
Events in quadrant A5,403,978846,701
Events in quadrant B7,977,325825,189
Events in quadrant C5,874,830855,139
Events in quadrant D9,848,230804,093

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02402738
B031508101
C02473062
D037709102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11735200.170430%
B117228166.961269%
C11722430.366832%
D117163222.748378%

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 16240 11756 3 3 0.02% 0.03%
B 16240 11749 555 555 3.42% 4.72%
C 16240 11748 17 17 0.10% 0.14%
D 16240 11748 188 188 1.16% 1.60%

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 10 83 75509 272.32 1357 1326 272.4
A 15 169 40223 142.78 1357 1326 272.4
A 9 143 22319 77.06 1357 1326 272.4
B 5 172 2503695 10029.94 1310 1274 249.5
B 0 189 69202 272.26 1310 1274 249.5
B 10 245 65881 258.95 1310 1274 249.5
C 15 214 488030 1619.68 1307 1318 300.5
C 0 10 144096 475.14 1307 1318 300.5
C 14 67 92656 303.96 1307 1318 300.5
D 8 195 3207059 9864.85 1297 1263 325.0
D 10 199 232199 710.63 1297 1263 325.0
D 13 249 216591 662.61 1297 1263 325.0

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