ASTROSAT CZTI

Data Quality Report

Orbit 47635

Creation date: 2024-07-19T19:15:38.073673
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/AS1A13_071T01_9000006340_47635cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47635cztM0_level2_quad_clean.evt
Size (bytes)434,695,68099,164,160
Size414.6 MB 94.6 MB
Events in quadrant A6,521,255659,570
Events in quadrant B2,755,310686,904
Events in quadrant C3,206,566640,571
Events in quadrant D3,156,665609,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237643
B0121081
C0136251
D0134241

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58123175.454233%
B5813781.341820%
C58131813.113711%
D5813661.135386%

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 7002 5813 88 88 1.26% 1.51%
B 7003 5814 1 1 0.01% 0.02%
C 7003 5814 141 141 2.01% 2.43%
D 7003 5814 14 14 0.20% 0.24%

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 3304333 23724.36 671 656 139.3
A 9 191 408811 2931.04 671 656 139.3
A 13 248 189049 1352.89 671 656 139.3
B 0 190 36117 270.73 669 649 131.0
B 0 198 17955 132.1 669 649 131.0
B 0 186 17880 131.53 669 649 131.0
C 3 233 583377 3805.46 649 652 153.1
C 14 254 73324 474.58 649 652 153.1
C 1 3 9472 57.6 649 652 153.1
D 2 249 284508 1728.47 662 641 164.2
D 7 55 120021 726.91 662 641 164.2
D 6 239 69966 422.12 662 641 164.2

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