ASTROSAT CZTI

Data Quality Report

Orbit 50669

Creation date: 2025-02-09T06:24:19.882219
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/AS1T05_241T01_9000006446_50669cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50669cztM0_level2_quad_clean.evt
Size (bytes)604,880,64093,712,320
Size576.9 MB 89.4 MB
Events in quadrant A4,448,664643,485
Events in quadrant B7,407,069530,285
Events in quadrant C4,837,685621,550
Events in quadrant D5,169,974568,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180982
B0267442
C0191282
D0202102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67971782.618802%
B6797185027.217890%
C67973535.193468%
D67974376.429307%

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 7877 6799 106 106 1.35% 1.56%
B 7877 6797 1434 1434 18.20% 21.10%
C 7877 6799 247 247 3.14% 3.63%
D 7877 6797 385 385 4.89% 5.66%

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 80 501626 2836.22 719 700 176.6
A 12 113 277955 1569.8 719 700 176.6
A 8 38 166718 939.99 719 700 176.6
B 4 170 3836449 28421.86 629 607 135.0
B 5 185 278611 2059.88 629 607 135.0
B 3 249 167476 1236.42 629 607 135.0
C 15 174 498093 2555.51 703 698 194.6
C 13 3 260624 1335.44 703 698 194.6
C 14 254 235778 1207.79 703 698 194.6
D 0 33 1076787 5632.31 688 663 191.1
D 2 249 329146 1719.24 688 663 191.1
D 8 129 274209 1431.71 688 663 191.1

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