ASTROSAT CZTI

Data Quality Report

Orbit 41031

Creation date: 2024-06-27T22:23:30.103658
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_029T02_9000005590_41031cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41031cztM0_level2_quad_clean.evt
Size (bytes)378,224,640112,394,880
Size360.7 MB 107.2 MB
Events in quadrant A3,517,571744,707
Events in quadrant B3,098,122768,187
Events in quadrant C3,322,495741,622
Events in quadrant D3,528,670671,221

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147033
B0140334
C0142442
D0156132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6855170.247994%
B6854180.262620%
C6855130.189643%
D68551592.319475%

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 9511 6857 3 3 0.03% 0.04%
B 9511 6857 0 0 0.00% 0.00%
C 9511 6857 9 9 0.09% 0.13%
D 9511 6857 117 117 1.23% 1.71%

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 576474 3719.11 755 739 154.8
A 13 254 9357 55.67 755 739 154.8
A 3 137 8656 51.14 755 739 154.8
B 0 229 98867 679.79 749 727 144.4
B 0 245 46417 316.48 749 727 144.4
B 12 111 19061 127.0 749 727 144.4
C 15 214 292385 1698.66 738 743 171.7
C 0 10 57989 333.43 738 743 171.7
C 12 249 46468 266.32 738 743 171.7
D 13 249 307151 1714.77 730 708 178.7
D 2 249 136523 759.98 730 708 178.7
D 12 0 110694 615.45 730 708 178.7

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