ASTROSAT CZTI

Data Quality Report

Orbit 36883

Creation date: 2024-06-27T21:32:47.007983
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_075T01_9000005244_36883cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36883cztM0_level2_quad_clean.evt
Size (bytes)387,172,80075,680,640
Size369.2 MB 72.2 MB
Events in quadrant A2,632,961653,104
Events in quadrant B763,8839,429
Events in quadrant C2,856,420670,632
Events in quadrant D5,126,816604,742

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109873
B051072
C0114982
D0186862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5012240.478851%
B50125012100.000000%
C5012911.815642%
D50124729.417398%

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 7075 5013 12 12 0.17% 0.24%
B 7074 5011 0 0 0.00% 0.00%
C 7075 5013 59 59 0.83% 1.18%
D 7075 5013 452 452 6.39% 9.02%

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 235793 1922.39 603 592 122.3
A 13 248 40339 324.87 603 592 122.3
A 13 6 13588 106.22 603 592 122.3
B 12 243 695332 184422.46 10 10 3.8
B 12 144 12707 3367.67 10 10 3.8
B 0 190 5110 1352.69 10 10 3.8
C 0 10 284359 2077.45 599 606 136.6
C 15 214 211659 1545.19 599 606 136.6
C 15 208 17409 123.02 599 606 136.6
D 12 235 1911584 13837.18 575 563 138.1
D 13 171 211355 1526.29 575 563 138.1
D 13 249 208669 1506.84 575 563 138.1

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