ASTROSAT CZTI

Data Quality Report

Orbit 42548

Creation date: 2024-06-27T22:41:29.094275
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_102T01_9000005812_42548cztM0_level2.fits modeM0/AS1A12_102T01_9000005812_42548cztM0_level2_quad_clean.evt
Size (bytes)305,196,48084,692,160
Size291.1 MB 80.8 MB
Events in quadrant A2,737,999577,758
Events in quadrant B2,451,925582,426
Events in quadrant C2,282,685556,808
Events in quadrant D3,438,228499,802

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109952
B0107692
C099462
D0135652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4956110.221953%
B49561092.199354%
C495620.040355%
D49562134.297821%

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 7078 4957 5 5 0.07% 0.10%
B 7078 4957 85 85 1.20% 1.71%
C 7078 4957 0 0 0.00% 0.00%
D 7078 4957 159 159 2.25% 3.21%

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 524892 4709.03 549 537 111.4
A 2 79 51493 457.62 549 537 111.4
A 13 248 34083 301.26 549 537 111.4
B 5 172 242701 2352.22 538 524 103.0
B 5 255 70866 683.22 538 524 103.0
B 0 245 25278 240.43 538 524 103.0
C 15 214 211019 1717.15 529 531 122.6
C 14 254 10056 77.7 529 531 122.6
C 13 61 3427 23.63 529 531 122.6
D 1 52 779423 6103.77 524 508 127.6
D 13 249 215027 1681.02 524 508 127.6
D 12 233 192129 1501.59 524 508 127.6

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