ASTROSAT CZTI

Data Quality Report

Orbit 39441

Creation date: 2024-06-27T22:04:36.373911
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_077T06_9000005474_39441cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39441cztM0_level2_quad_clean.evt
Size (bytes)450,624,96089,654,400
Size429.7 MB 85.5 MB
Events in quadrant A4,749,190577,304
Events in quadrant B3,102,033638,369
Events in quadrant C3,865,282581,835
Events in quadrant D4,522,296519,640

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179073
B0132342
C0151242
D0174692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A568257610.137276%
B56821152.023935%
C56823405.983809%
D568258210.242872%

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 7265 5682 458 458 6.30% 8.06%
B 7265 5683 58 58 0.80% 1.02%
C 7265 5683 266 266 3.66% 4.68%
D 7265 5683 448 448 6.17% 7.88%

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 15 222 1611834 12991.29 600 587 124.0
A 10 83 459981 3704.04 600 587 124.0
A 9 143 342775 2759.02 600 587 124.0
B 5 172 343316 2779.69 628 610 123.3
B 5 255 263037 2128.55 628 610 123.3
B 12 111 15089 117.44 628 610 123.3
C 15 208 910770 6495.25 598 602 140.1
C 9 187 277662 1977.19 598 602 140.1
C 15 214 231162 1645.35 598 602 140.1
D 12 0 1137939 7966.81 588 571 142.8
D 12 227 673216 4711.61 588 571 142.8
D 13 249 209000 1459.96 588 571 142.8

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