ASTROSAT CZTI

Data Quality Report

Orbit 17826

Creation date: 2024-06-27T17:41:22.844836
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/AS1A05_015T01_9000002650_17826cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17826cztM0_level2_quad_clean.evt
Size (bytes)892,753,920135,881,280
Size851.4 MB 129.6 MB
Events in quadrant A6,143,642825,235
Events in quadrant B6,425,701833,475
Events in quadrant C5,879,928804,901
Events in quadrant D7,737,457782,614

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266022
B0270662
C0255192
D0315692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125601361.082803%
B125612111.679803%
C125611581.257862%
D125605934.721338%

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 13895 12562 4 4 0.03% 0.03%
B 13896 12563 49 49 0.35% 0.39%
C 13896 12563 0 0 0.00% 0.00%
D 13895 12562 346 346 2.49% 2.75%

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 15 174 377191 1243.45 1499 1464 302.2
A 0 226 12954 38.03 1499 1464 302.2
A 3 137 11423 32.96 1499 1464 302.2
B 7 220 168832 577.55 1494 1451 289.8
B 10 245 114086 388.65 1494 1451 289.8
B 10 16 89216 302.83 1494 1451 289.8
C 14 238 219193 646.45 1435 1443 336.8
C 3 233 44298 127.23 1435 1443 336.8
C 5 218 21917 60.78 1435 1443 336.8
D 7 238 1928267 5607.91 1425 1390 343.6
D 10 70 148244 427.4 1425 1390 343.6
D 13 104 80273 229.58 1425 1390 343.6

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