ASTROSAT CZTI

Data Quality Report

Orbit 04046

Creation date: 2024-06-27T14:36:43.682330
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/AS1G05_241T04_9000000518_04046cztM0_level2.evt modeM0/AS1G05_241T04_9000000518_04046cztM0_level2_quad_clean.evt
Size (bytes)869,863,680140,132,160
Size829.6 MB 133.6 MB
Events in quadrant A6,908,578833,332
Events in quadrant B6,979,589851,149
Events in quadrant C5,714,469848,567
Events in quadrant D5,869,002820,851

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02622
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029307147
B029552142
C026537138
D027285109

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128664263.311052%
B128744113.192481%
C128641861.445896%
D128812531.964133%

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 14454 12928 135 135 0.93% 1.04%
B 14454 12929 149 149 1.03% 1.15%
C 14454 12928 6 6 0.04% 0.05%
D 14453 12927 60 60 0.42% 0.46%

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 0 199 279881 926.02 1466 1431 300.7
A 0 5 270762 895.7 1466 1431 300.7
A 14 111 230543 761.94 1466 1431 300.7
B 14 167 840300 2889.0 1485 1443 290.4
B 7 252 266493 912.82 1485 1443 290.4
B 15 204 57956 194.63 1485 1443 290.4
C 1 16 54042 156.48 1439 1448 336.1
C 9 144 26598 74.83 1439 1448 336.1
C 13 61 11940 31.22 1439 1448 336.1
D 13 239 139978 392.2 1443 1393 353.4
D 2 14 90582 252.41 1443 1393 353.4
D 12 110 50882 140.05 1443 1393 353.4

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