ASTROSAT CZTI

Data Quality Report

Orbit 29266

Creation date: 2024-06-27T20:02:01.967651
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/AS1A10_045T08_9000004208_29266cztM0_level2.evt modeM0/AS1A10_045T08_9000004208_29266cztM0_level2_quad_clean.evt
Size (bytes)3,160,739,520415,869,120
Size2.9 GB 396.6 MB
Events in quadrant A16,411,5842,621,064
Events in quadrant B17,809,9082,671,890
Events in quadrant C28,644,7762,492,017
Events in quadrant D30,598,3062,500,878

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06840
B06840
C06840
D06840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0699826
B0745936
C01093499
D01138156

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A336122960.880638%
B336134301.279267%
C3361226687.937641%
D3361230659.118767%

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 38442 33619 72 72 0.19% 0.21%
B 38443 33620 61 61 0.16% 0.18%
C 38442 33617 170 170 0.44% 0.51%
D 38442 33619 2257 2257 5.87% 6.71%

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 15 174 314098 374.34 4152 4059 828.2
A 1 113 71738 81.72 4152 4059 828.2
A 13 254 62365 70.4 4152 4059 828.2
B 10 245 581144 734.04 4113 4008 786.3
B 0 229 492811 621.69 4113 4008 786.3
B 0 183 263537 330.08 4113 4008 786.3
C 3 233 11891611 13262.91 3880 3917 896.3
C 14 238 956547 1062.83 3880 3917 896.3
C 14 254 485327 537.1 3880 3917 896.3
D 1 52 9514825 9393.53 3874 3806 1012.5
D 8 195 3372999 3327.57 3874 3806 1012.5
D 7 223 1306676 1286.78 3874 3806 1012.5

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