ASTROSAT CZTI

Data Quality Report

Orbit 20180206_A04_112T01_9000001884_level2

Creation date: 2025-11-19T08:27:57.471418
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/AS1A04_112T01_9000001884cztM0_level2.fits modeM0/AS1A04_112T01_9000001884cztM0_level2_quad_clean.evt
Size (bytes)366,310,080446,132,160
Size349.3 MB 425.5 MB
Events in quadrant A2,280,7522,914,646
Events in quadrant B2,104,7942,754,255
Events in quadrant C2,204,7942,762,399
Events in quadrant D1,858,2082,437,384

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0848200
B01039390
C0837730
D01025100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07840
B07840
C07840
D07840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A384885621.460195%
B3848832238.374039%
C384885261.366660%
D3848823156.014862%

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 46393 38487 0 0 0.00% 0.00%
B 46393 38307 0 0 0.00% 0.00%
C 46393 38485 0 0 0.00% 0.00%
D 46393 38329 0 0 0.00% 0.00%

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 0 29 2084 10.39 593 561 146.5
A 7 110 1851 8.8 593 561 146.5
A 9 19 1746 8.09 593 561 146.5
B 2 9 1825 11.82 556 534 109.2
B 5 128 1412 8.04 556 534 109.2
B 14 254 1405 7.98 556 534 109.2
C 12 241 1574 6.84 582 544 150.5
C 3 126 1453 6.04 582 544 150.5
C 2 191 1447 6.0 582 544 150.5
D 3 14 1362 6.14 531 486 142.6
D 6 231 1320 5.85 531 486 142.6
D 3 31 1301 5.71 531 486 142.6

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