ASTROSAT CZTI

Data Quality Report

Orbit 37884

Creation date: 2024-06-27T21:45:41.390850
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_001T12_9000005352_37884cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37884cztM0_level2_quad_clean.evt
Size (bytes)377,245,44082,416,960
Size359.8 MB 78.6 MB
Events in quadrant A2,625,181560,775
Events in quadrant B2,815,108552,306
Events in quadrant C2,627,575524,001
Events in quadrant D3,022,170513,536

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106863
B0114232
C0107222
D0121762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4929120.243457%
B49291372.779468%
C4929551.115845%
D49291052.130250%

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 7052 4930 5 5 0.07% 0.10%
B 7052 4930 113 113 1.60% 2.29%
C 7052 4930 51 51 0.72% 1.03%
D 7052 4930 85 85 1.21% 1.72%

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 345008 2988.1 579 569 115.3
A 12 227 18232 153.23 579 569 115.3
A 12 189 10182 83.4 579 569 115.3
B 5 172 474382 4468.69 562 548 106.0
B 0 213 27375 253.0 562 548 106.0
B 0 183 23414 215.65 562 548 106.0
C 15 214 209033 1658.5 549 553 125.7
C 0 10 206937 1641.82 549 553 125.7
C 14 254 60229 474.73 549 553 125.7
D 2 249 186175 1368.16 558 543 135.7
D 10 199 177915 1307.28 558 543 135.7
D 12 233 139112 1021.29 558 543 135.7

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