ASTROSAT CZTI

Data Quality Report

Orbit 51004

Creation date: 2025-03-03T20:07:14.335493
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_001T02_9000006452_51004cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51004cztM0_level2_quad_clean.evt
Size (bytes)623,675,52092,640,960
Size594.8 MB 88.3 MB
Events in quadrant A8,551,366546,365
Events in quadrant B4,116,024668,418
Events in quadrant C4,391,787584,268
Events in quadrant D5,502,576534,243

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300781
B0169401
C0177911
D0212491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6771135920.070891%
B67712954.356816%
C67713705.464481%
D67705097.518464%

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 7396 6772 1408 1408 19.04% 20.79%
B 7396 6772 82 82 1.11% 1.21%
C 7396 6772 219 219 2.96% 3.23%
D 7395 6771 359 359 4.85% 5.30%

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 80 3836760 22777.59 685 667 168.4
A 4 249 438422 2599.26 685 667 168.4
A 10 253 390248 2313.22 685 667 168.4
B 4 170 362863 2413.81 705 680 150.0
B 1 207 176006 1168.48 705 680 150.0
B 12 32 145808 967.22 705 680 150.0
C 14 245 418930 2223.16 684 676 188.1
C 12 252 309525 1641.64 684 676 188.1
C 3 242 157721 834.75 684 676 188.1
D 7 39 674798 3603.24 672 647 187.1
D 10 181 419049 2236.3 672 647 187.1
D 2 216 418255 2232.05 672 647 187.1

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