ASTROSAT CZTI

Data Quality Report

Orbit 53731

Creation date: 2025-09-03T12:18:10.419609
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/AS1A14_022T04_9000006506_53731cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53731cztM0_level2_quad_clean.evt
Size (bytes)973,679,04071,553,600
Size928.6 MB 68.2 MB
Events in quadrant A16,481,48062,104
Events in quadrant B3,099,059698,699
Events in quadrant C10,353,855407,407
Events in quadrant D5,595,264536,316

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0535652
B0140562
C0353802
D0212462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6625612492.437736%
B66251402.113208%
C6625260439.305660%
D662571310.762264%

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 7735 6625 5909 5909 76.39% 89.19%
B 7735 6626 16 16 0.21% 0.24%
C 7735 6626 2158 2158 27.90% 32.57%
D 7735 6626 554 554 7.16% 8.36%

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 3 63 14043392 167970.42 337 328 83.6
A 3 78 847157 10129.0 337 328 83.6
A 8 245 95290 1135.85 337 328 83.6
B 0 213 119438 769.93 719 696 154.2
B 4 171 27361 172.9 719 696 154.2
B 7 0 22011 138.21 719 696 154.2
C 15 224 5437683 34672.69 566 564 156.8
C 1 241 2199629 14023.51 566 564 156.8
C 12 2 89111 564.67 566 564 156.8
D 1 241 994595 5197.16 665 635 191.3
D 6 239 435915 2275.96 665 635 191.3
D 7 30 308614 1610.34 665 635 191.3

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