ASTROSAT CZTI

Data Quality Report

Orbit 41444

Creation date: 2024-06-27T22:29:08.609022
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/AS1T05_100T01_9000005668_41444cztM0_level2.fits modeM0/AS1T05_100T01_9000005668_41444cztM0_level2_quad_clean.evt
Size (bytes)320,221,44089,291,520
Size305.4 MB 85.2 MB
Events in quadrant A2,835,665606,308
Events in quadrant B2,363,691628,653
Events in quadrant C3,573,062562,458
Events in quadrant D2,677,885543,955

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114843
B0105092
C0136922
D0116352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5172120.232019%
B517280.154679%
C51723376.515855%
D5172881.701469%

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 7115 5173 4 4 0.06% 0.08%
B 7115 5173 0 0 0.00% 0.00%
C 7115 5173 337 337 4.74% 6.51%
D 7115 5173 69 69 0.97% 1.33%

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 500525 4180.57 581 570 119.6
A 12 189 55918 462.81 581 570 119.6
A 2 79 17382 140.58 581 570 119.6
B 0 190 52303 463.59 583 567 111.6
B 12 111 14018 120.53 583 567 111.6
B 11 111 12952 110.98 583 567 111.6
C 0 10 716725 5651.2 548 551 126.7
C 9 54 506509 3992.42 548 551 126.7
C 15 214 210754 1658.67 548 551 126.7
D 13 171 240744 1736.25 564 548 138.3
D 13 249 130101 936.47 564 548 138.3
D 1 47 39291 280.05 564 548 138.3

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