ASTROSAT CZTI

Data Quality Report

Orbit 20220611_A10_071T34_9000005178_level2

Creation date: 2026-01-03T06:28:02.758270
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/AS1A10_071T34_9000005178cztM0_level2.fits modeM0/AS1A10_071T34_9000005178cztM0_level2_quad_clean.evt
Size (bytes)371,695,680361,097,280
Size354.5 MB 344.4 MB
Events in quadrant A2,269,4082,182,124
Events in quadrant B2,143,6202,153,607
Events in quadrant C2,238,2002,074,888
Events in quadrant D1,848,8281,769,340

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08220
B08220
C08220
D08220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01390
B01390
C01390
D01390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0831560
B0974650
C0860960
D01258780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40121880.219337%
B4012114453.601605%
C401212590.645547%
D4012133048.235089%

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 54095 40121 0 0 0.00% 0.00%
B 54095 40104 0 0 0.00% 0.00%
C 54095 40120 0 0 0.00% 0.00%
D 54095 40090 0 0 0.00% 0.00%

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 7 110 1940 9.37 593 556 147.8
A 0 29 1816 8.53 593 556 147.8
A 9 19 1791 8.36 593 556 147.8
B 2 9 1878 11.71 568 539 114.3
B 3 80 1640 9.63 568 539 114.3
B 2 8 1600 9.28 568 539 114.3
C 1 81 1846 8.45 591 553 153.1
C 1 80 1841 8.41 591 553 153.1
C 3 202 1667 7.28 591 553 153.1
D 10 113 1393 6.42 530 483 141.7
D 10 189 1364 6.22 530 483 141.7
D 6 38 1348 6.11 530 483 141.7

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