ASTROSAT CZTI

Data Quality Report

Orbit 50215

Creation date: 2025-01-10T20:31:49.762737
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/AS1C09_003T01_9000006442_50215cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50215cztM0_level2_quad_clean.evt
Size (bytes)1,001,315,52059,958,720
Size954.9 MB 57.2 MB
Events in quadrant A7,234,044467,324
Events in quadrant B4,073,765597,407
Events in quadrant C13,391,12897,218
Events in quadrant D11,909,868239,666

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255621
B0161471
C0437961
D0394401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5918134122.659682%
B59182804.731328%
C5919503985.132624%
D5919353659.739821%

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 6938 5918 1211 1211 17.45% 20.46%
B 6938 5918 179 179 2.58% 3.02%
C 6939 5919 4706 4706 67.82% 79.51%
D 6938 5918 3538 3538 50.99% 59.78%

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 3 231 1614791 11091.09 580 566 145.5
A 0 98 1145050 7863.57 580 566 145.5
A 10 253 430782 2955.95 580 566 145.5
B 4 206 856530 6552.2 613 592 130.6
B 3 249 245358 1873.68 613 592 130.6
B 6 203 108030 822.44 613 592 130.6
C 4 111 9886225 130179.74 263 261 75.9
C 15 197 882870 11622.32 263 261 75.9
C 15 213 388033 5106.24 263 261 75.9
D 7 61 3320766 24706.34 466 449 134.4
D 15 108 1763399 13118.04 466 449 134.4
D 12 6 685477 5097.26 466 449 134.4

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