ASTROSAT CZTI

Data Quality Report

Orbit 20953

Creation date: 2024-06-27T18:21:36.409568
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/AS1A05_088T05_9000003088_20953cztM0_level2.evt modeM0/AS1A05_088T05_9000003088_20953cztM0_level2_quad_clean.evt
Size (bytes)1,343,056,320231,010,560
Size1.3 GB 220.3 MB
Events in quadrant A8,350,9851,484,549
Events in quadrant B9,043,9691,485,554
Events in quadrant C8,443,5231,429,327
Events in quadrant D13,615,8071,351,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370303
B0386273
C0368703
D0526423

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18066940.520314%
B180671770.979687%
C180671190.658659%
D1806712496.913157%

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 20031 18069 11 11 0.05% 0.06%
B 20032 18070 33 33 0.16% 0.18%
C 20032 18070 4 4 0.02% 0.02%
D 20032 18070 1124 1124 5.61% 6.22%

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 96 80833 182.03 2151 2099 432.5
A 0 226 18607 38.17 2151 2099 432.5
A 3 137 17223 34.97 2151 2099 432.5
B 7 220 228848 549.75 2147 2092 412.5
B 4 216 87411 206.85 2147 2092 412.5
B 3 64 73184 172.35 2147 2092 412.5
C 14 238 320203 655.82 2061 2071 485.1
C 9 54 32576 62.89 2061 2071 485.1
C 10 91 30354 58.3 2061 2071 485.1
D 1 52 1894570 3810.65 2049 1993 496.7
D 1 20 1474320 2964.48 2049 1993 496.7
D 9 1 646779 1298.26 2049 1993 496.7

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