ASTROSAT CZTI

Data Quality Report

Orbit 27375

Creation date: 2024-06-27T19:39:29.922541
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/AS1T03_249T01_9000003934_27375cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27375cztM0_level2_quad_clean.evt
Size (bytes)745,159,68061,597,440
Size710.6 MB 58.7 MB
Events in quadrant A3,099,345425,646
Events in quadrant B3,141,288421,415
Events in quadrant C7,150,617225,252
Events in quadrant D8,758,879360,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128810
B0129560
C0251020
D0301670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62341081.732435%
B62231191.912261%
C6164196431.862427%
D5943164327.645970%

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 7200 6414 0 0 0.00% 0.00%
B 7201 6388 2 2 0.03% 0.03%
C 7201 6316 1664 1664 23.11% 26.35%
D 7201 6148 1365 1365 18.96% 22.20%

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 12 189 12497 72.09 800 785 162.5
A 13 254 10113 57.41 800 785 162.5
A 3 137 7497 41.31 800 785 162.5
B 15 32 21392 137.37 784 764 150.2
B 12 111 18545 118.41 784 764 150.2
B 11 111 16382 104.01 784 764 150.2
C 2 16 4742738 34077.0 591 594 139.2
C 14 238 94268 673.14 591 594 139.2
C 15 208 7775 51.6 591 594 139.2
D 1 52 5816933 36983.34 664 649 157.3
D 2 250 211912 1343.33 664 649 157.3
D 12 227 154005 975.13 664 649 157.3

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