ASTROSAT CZTI

Data Quality Report

Orbit 39490

Creation date: 2024-06-27T22:05:14.556872
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_001T02_9000005486_39490cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39490cztM0_level2_quad_clean.evt
Size (bytes)315,452,16088,274,880
Size300.8 MB 84.2 MB
Events in quadrant A2,986,800589,679
Events in quadrant B2,496,338619,431
Events in quadrant C2,901,103583,652
Events in quadrant D2,911,632537,472

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118763
B0107592
C0117722
D0119672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4889992.024954%
B4889601.227245%
C48891412.884025%
D48891102.249949%

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 6982 4890 58 58 0.83% 1.19%
B 6982 4890 35 35 0.50% 0.72%
C 6982 4890 119 119 1.70% 2.43%
D 6982 4890 100 100 1.43% 2.04%

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 398556 3661.09 539 529 108.7
A 9 143 239742 2200.3 539 529 108.7
A 15 222 151073 1384.72 539 529 108.7
B 5 255 195396 1880.92 547 532 103.6
B 5 172 135966 1307.27 547 532 103.6
B 12 111 12723 117.67 547 532 103.6
C 15 208 463505 3760.29 536 541 123.1
C 15 214 205279 1662.92 536 541 123.1
C 9 187 101689 821.55 536 541 123.1
D 2 249 283702 2200.11 529 514 128.7
D 13 249 253344 1964.26 529 514 128.7
D 12 227 236463 1833.11 529 514 128.7

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