ASTROSAT CZTI

Data Quality Report

Orbit 41527

Creation date: 2024-06-27T22:30:05.237165
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/AS1A12_035T02_9000005676_41527cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41527cztM0_level2_quad_clean.evt
Size (bytes)738,397,440200,496,960
Size704.2 MB 191.2 MB
Events in quadrant A6,562,1071,347,463
Events in quadrant B6,198,8371,365,881
Events in quadrant C6,559,8121,290,391
Events in quadrant D7,054,7661,212,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265564
B0265723
C0271243
D0293263

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12349250.202446%
B12349400.323913%
C123492662.154021%
D123491881.522390%

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 16737 12352 9 9 0.05% 0.07%
B 16737 12352 16 16 0.10% 0.13%
C 16737 12352 257 257 1.54% 2.08%
D 16737 12352 197 197 1.18% 1.59%

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 1076243 3825.38 1372 1341 281.0
A 14 235 132058 465.2 1372 1341 281.0
A 13 6 25879 87.33 1372 1341 281.0
B 0 190 267039 1020.15 1356 1317 260.5
B 0 186 262938 1004.4 1356 1317 260.5
B 0 245 130602 496.34 1356 1317 260.5
C 0 10 680148 2228.84 1314 1321 304.6
C 15 214 521578 1708.19 1314 1321 304.6
C 14 254 99502 322.36 1314 1321 304.6
D 5 222 993509 3043.3 1333 1297 326.0
D 13 249 305017 931.57 1333 1297 326.0
D 1 47 251413 767.15 1333 1297 326.0

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