ASTROSAT CZTI

Data Quality Report

Orbit 01337

Creation date: 2024-06-27T14:11:10.496873
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/AS1G04_002T02_9000000230_01337cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01337cztM0_level2_quad_clean.evt
Size (bytes)1,197,717,120104,785,920
Size1.1 GB 99.9 MB
Events in quadrant A8,977,404680,373
Events in quadrant B9,799,076682,971
Events in quadrant C8,942,981665,212
Events in quadrant D8,087,788654,347

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0316851
B0340840
C0315410
D0290450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70471191.688662%
B7047731.035902%
C7047230.326380%
D7047480.681141%

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 7047 7047 526 526 7.46% 7.46%
B 7047 7047 636 636 9.03% 9.03%
C 7047 7047 534 534 7.58% 7.58%
D 7047 7047 402 402 5.70% 5.70%

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 4 32 214994 386.37 2269 2287 550.5
A 15 127 27208 45.27 2269 2287 550.5
A 15 233 11490 16.72 2269 2287 550.5
B 8 4 580444 1031.52 2331 2340 560.4
B 12 52 115210 201.4 2331 2340 560.4
B 15 22 106819 186.42 2331 2340 560.4
C 15 241 337323 571.12 2100 2176 586.8
C 3 9 332584 563.05 2100 2176 586.8
C 3 79 37467 60.14 2100 2176 586.8
D 10 84 163304 252.13 2082 2147 639.2
D 13 252 61176 92.35 2082 2147 639.2
D 1 83 35814 52.67 2082 2147 639.2

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