ASTROSAT CZTI

Data Quality Report

Orbit 20240428_A13_062T01_9000006208_level2

Creation date: 2024-05-08T10:21:34.378855
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/AS1A13_062T01_9000006208cztM0_level2.fits modeM0/AS1A13_062T01_9000006208cztM0_level2_quad_clean.evt
Size (bytes)972,789,120900,777,600
Size927.7 MB 859.0 MB
Events in quadrant A5,735,6605,134,000
Events in quadrant B5,633,5265,221,301
Events in quadrant C5,798,4125,056,805
Events in quadrant D5,049,5244,627,085

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03367210
B02254170
C02332860
D02571820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021520
B021520
C021520
D021520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10563329762.817301%
B10563523732.246415%
C10563418291.731450%
D10563433053.128727%

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 121299 105625 0 0 0.00% 0.00%
B 121300 105619 0 0 0.00% 0.00%
C 121299 105627 0 0 0.00% 0.00%
D 121299 105629 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 7 110 4627 8.46 1496 1394 382.0
A 15 236 4620 8.44 1496 1394 382.0
A 0 29 4278 7.55 1496 1394 382.0
B 2 9 5250 13.05 1483 1405 294.7
B 2 8 4142 9.29 1483 1405 294.7
B 3 17 4111 9.18 1483 1405 294.7
C 3 202 4306 7.18 1533 1417 402.5
C 3 203 4225 6.98 1533 1417 402.5
C 1 81 4122 6.72 1533 1417 402.5
D 7 3 3672 5.9 1443 1311 399.8
D 10 189 3632 5.8 1443 1311 399.8
D 4 12 3538 5.57 1443 1311 399.8

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