ASTROSAT CZTI

Data Quality Report

Orbit 26412

Creation date: 2024-06-27T19:28:42.107472
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/AS1A09_127T02_9000003818_26412cztM0_level2.evt modeM0/AS1A09_127T02_9000003818_26412cztM0_level2_quad_clean.evt
Size (bytes)477,714,24081,976,320
Size455.6 MB 78.2 MB
Events in quadrant A2,734,367545,578
Events in quadrant B4,121,027502,133
Events in quadrant C3,406,588520,156
Events in quadrant D3,813,461510,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120250
B0161030
C0138810
D0152370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5773490.848779%
B577458010.045029%
C57741021.766540%
D57742314.000693%

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 6848 5774 0 0 0.00% 0.00%
B 6849 5775 428 428 6.25% 7.41%
C 6849 5775 11 11 0.16% 0.19%
D 6849 5775 180 180 2.63% 3.12%

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 13 254 10794 72.31 705 689 139.7
A 0 31 7823 51.05 705 689 139.7
A 0 226 6158 39.14 705 689 139.7
B 5 172 1299932 10230.01 666 649 127.0
B 0 244 153514 1203.6 666 649 127.0
B 15 32 23536 180.2 666 649 127.0
C 3 233 461087 2876.13 679 683 160.1
C 2 16 176545 1098.61 679 683 160.1
C 14 238 107691 668.48 679 683 160.1
D 1 52 730289 4498.19 683 667 162.2
D 7 80 217145 1334.61 683 667 162.2
D 12 233 112426 689.0 683 667 162.2

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