ASTROSAT CZTI

Data Quality Report

Orbit 18305

Creation date: 2024-06-27T17:48:07.025571
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/AS1A06_006T01_9000002720_18305cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18305cztM0_level2_quad_clean.evt
Size (bytes)494,775,36087,537,600
Size471.9 MB 83.5 MB
Events in quadrant A3,083,343557,670
Events in quadrant B3,271,984560,671
Events in quadrant C3,113,600545,961
Events in quadrant D5,063,576522,535

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135232
B0139652
C0135222
D0195272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6652210.315695%
B6652430.646422%
C6652400.601323%
D66523184.780517%

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 7622 6652 3 3 0.04% 0.05%
B 7622 6652 12 12 0.16% 0.18%
C 7622 6653 0 0 0.00% 0.00%
D 7622 6653 205 205 2.69% 3.08%

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 4 2 14270 83.3 797 780 161.9
A 0 226 6934 38.0 797 780 161.9
A 3 137 5973 32.07 797 780 161.9
B 7 220 59115 380.22 801 779 153.4
B 0 197 32797 208.69 801 779 153.4
B 12 111 17986 112.15 801 779 153.4
C 14 238 117929 652.64 765 772 179.5
C 0 207 9529 48.78 765 772 179.5
C 13 61 5474 26.19 765 772 179.5
D 1 52 1023501 5478.53 762 739 186.7
D 7 238 707888 3787.91 762 739 186.7
D 13 168 374876 2004.1 762 739 186.7

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