ASTROSAT CZTI

Data Quality Report

Orbit 17522

Creation date: 2024-06-27T17:37:33.483354
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_140T01_9000002596_17522cztM0_level2.evt modeM0/AS1A05_140T01_9000002596_17522cztM0_level2_quad_clean.evt
Size (bytes)771,912,000148,947,840
Size736.2 MB 142.0 MB
Events in quadrant A5,450,143952,146
Events in quadrant B5,497,701952,350
Events in quadrant C5,536,468904,809
Events in quadrant D6,106,256898,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240582
B0239472
C0240412
D0261602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116011611.387811%
B116011881.620550%
C116012051.767089%
D116013072.646324%

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 12616 11602 4 4 0.03% 0.03%
B 12616 11603 1 1 0.01% 0.01%
C 12616 11603 0 0 0.00% 0.00%
D 12616 11603 155 155 1.23% 1.34%

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 42912 146.24 1405 1373 284.0
A 0 226 12482 39.11 1405 1373 284.0
A 3 137 10516 32.19 1405 1373 284.0
B 12 111 32179 115.3 1400 1367 267.2
B 11 111 28042 99.82 1400 1367 267.2
B 14 111 23598 83.19 1400 1367 267.2
C 14 238 206875 647.5 1344 1350 317.4
C 3 233 45415 138.82 1344 1350 317.4
C 5 218 27690 82.98 1344 1350 317.4
D 5 222 347439 1055.1 1353 1315 328.0
D 2 33 210758 638.45 1353 1315 328.0
D 13 189 150615 455.11 1353 1315 328.0

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