ASTROSAT CZTI

Data Quality Report

Orbit 53834

Creation date: 2025-09-10T10:10:40.528094
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_53834cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53834cztM0_level2_quad_clean.evt
Size (bytes)542,116,80082,820,160
Size517.0 MB 79.0 MB
Events in quadrant A2,844,748582,105
Events in quadrant B3,918,296616,145
Events in quadrant C7,461,739419,962
Events in quadrant D5,384,024476,978

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126316
B0158481
C0262271
D0200491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5905871.473328%
B59052123.590178%
C5905163927.756139%
D590670611.953945%

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 7039 5905 20 20 0.28% 0.34%
B 7040 5905 119 119 1.69% 2.02%
C 7040 5905 1584 1584 22.50% 26.82%
D 7041 5907 650 650 9.23% 11.00%

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 0 8 88204 550.78 649 633 159.0
A 4 249 78749 491.31 649 633 159.0
A 8 249 65049 405.15 649 633 159.0
B 5 172 899745 6508.33 641 619 138.1
B 5 185 263402 1902.16 641 619 138.1
B 4 158 128801 927.85 641 619 138.1
C 1 241 3322616 22214.79 539 535 149.5
C 15 224 1242078 8302.21 539 535 149.5
C 10 171 296725 1980.62 539 535 149.5
D 15 93 2391713 14219.95 597 571 168.2
D 10 172 110321 652.68 597 571 168.2
D 3 224 101092 597.79 597 571 168.2

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