ASTROSAT CZTI

Data Quality Report

Orbit 36956

Creation date: 2024-06-27T21:33:34.042521
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/AS1C07_001T10_9000005252_36956cztM0_level2.evt modeM0/AS1C07_001T10_9000005252_36956cztM0_level2_quad_clean.evt
Size (bytes)508,308,48089,717,760
Size484.8 MB 85.6 MB
Events in quadrant A2,720,384612,219
Events in quadrant B4,450,317567,703
Events in quadrant C3,294,169614,983
Events in quadrant D4,595,592576,157

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112253
B0165432
C0128002
D0169842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4928501.014610%
B492864813.149351%
C49282054.159903%
D49284479.070617%

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 7020 4929 39 39 0.56% 0.79%
B 7020 4929 536 536 7.64% 10.87%
C 7020 4929 141 141 2.01% 2.86%
D 7020 4929 389 389 5.54% 7.89%

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 246161 2139.42 572 561 114.8
A 15 237 86525 748.83 572 561 114.8
A 15 174 80972 700.46 572 561 114.8
B 4 171 836082 8330.61 543 528 100.3
B 5 172 816374 8134.12 543 528 100.3
B 0 221 162231 1612.2 543 528 100.3
C 1 23 361847 2772.25 568 574 130.3
C 0 10 272024 2082.98 568 574 130.3
C 15 214 211729 1620.31 568 574 130.3
D 12 17 1527023 10403.93 551 539 146.7
D 2 250 239751 1630.38 551 539 146.7
D 10 253 196583 1336.16 551 539 146.7

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