ASTROSAT CZTI

Data Quality Report

Orbit 51264

Creation date: 2025-03-21T08:03:35.402415
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/AS1C07_001T01_9000006454_51264cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51264cztM0_level2_quad_clean.evt
Size (bytes)756,996,48091,416,960
Size721.9 MB 87.2 MB
Events in quadrant A6,899,777630,748
Events in quadrant B4,360,473701,213
Events in quadrant C11,596,109382,325
Events in quadrant D4,639,341579,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253465
B0177682
C0391652
D0188462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67992954.338873%
B67992313.397558%
C6799310945.727313%
D67993184.677158%

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 7889 6801 304 304 3.85% 4.47%
B 7889 6801 135 135 1.71% 1.99%
C 7889 6799 2987 2987 37.86% 43.93%
D 7889 6801 284 284 3.60% 4.18%

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 12 3 2537984 14596.82 694 678 173.8
A 12 80 917543 5274.62 694 678 173.8
A 12 194 291336 1672.12 694 678 173.8
B 8 128 373064 2529.85 698 674 147.2
B 10 254 368999 2502.23 698 674 147.2
B 5 185 344853 2338.2 698 674 147.2
C 4 12 8173080 54148.02 543 539 150.9
C 15 158 827136 5476.7 543 539 150.9
C 13 3 79932 526.03 543 539 150.9
D 3 12 805675 4243.12 666 639 189.7
D 2 216 479990 2526.52 666 639 189.7
D 8 176 228479 1200.88 666 639 189.7

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