ASTROSAT CZTI

Data Quality Report

Orbit 37324

Creation date: 2024-06-27T21:38:28.803043
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/AS1A11_030T02_9000005310_37324cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37324cztM0_level2_quad_clean.evt
Size (bytes)540,527,04065,998,080
Size515.5 MB 62.9 MB
Events in quadrant A3,346,425404,663
Events in quadrant B3,121,171410,577
Events in quadrant C4,738,872390,404
Events in quadrant D4,756,664373,271

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137203
B0131132
C0178822
D0181372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6002771.282906%
B60021171.949350%
C60024307.164279%
D60025569.263579%

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 7315 6003 46 46 0.63% 0.77%
B 7315 6003 51 51 0.70% 0.85%
C 7315 6003 378 378 5.17% 6.30%
D 7315 6003 439 439 6.00% 7.31%

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 311507 2268.6 678 665 137.0
A 13 248 182844 1329.59 678 665 137.0
A 15 237 101803 738.13 678 665 137.0
B 12 2 117750 907.53 671 655 129.0
B 12 18 113393 873.77 671 655 129.0
B 0 190 83099 638.98 671 655 129.0
C 1 23 1570243 10427.65 645 648 150.5
C 14 254 270715 1794.2 645 648 150.5
C 15 214 246056 1630.37 645 648 150.5
D 2 249 1107950 7006.01 639 620 158.1
D 13 249 511165 3230.19 639 620 158.1
D 13 171 365465 2308.35 639 620 158.1

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