ASTROSAT CZTI

Data Quality Report

Orbit 40721

Creation date: 2024-06-27T22:19:35.560648
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_042T01_9000005560_40721cztM0_level2.fits modeM0/AS1A12_042T01_9000005560_40721cztM0_level2_quad_clean.evt
Size (bytes)394,113,60090,362,880
Size375.9 MB 86.2 MB
Events in quadrant A2,977,708627,066
Events in quadrant B2,781,003658,868
Events in quadrant C5,585,892559,848
Events in quadrant D2,835,265522,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121563
B0116052
C0201322
D0120932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5253160.304588%
B5253240.456882%
C525376514.563107%
D52534698.928231%

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 7346 5254 9 9 0.12% 0.17%
B 7346 5254 16 16 0.22% 0.30%
C 7346 5254 754 754 10.26% 14.35%
D 7346 5254 54 54 0.74% 1.03%

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 492127 4164.94 582 571 118.0
A 12 189 202881 1714.17 582 571 118.0
A 7 3 19154 157.45 582 571 118.0
B 4 170 149740 1344.24 588 573 111.0
B 0 190 90092 806.72 588 573 111.0
B 4 171 80082 716.51 588 573 111.0
C 9 187 3154628 25500.28 538 539 123.7
C 15 214 214270 1727.98 538 539 123.7
C 14 254 97542 784.25 538 539 123.7
D 2 250 228884 1728.33 536 520 132.1
D 12 191 171504 1294.06 536 520 132.1
D 2 249 119422 899.89 536 520 132.1

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