ASTROSAT CZTI

Data Quality Report

Orbit 53298

Creation date: 2025-08-05T08:28:55.749499
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/AS1C09_011T08_9000006492_53298cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53298cztM0_level2_quad_clean.evt
Size (bytes)575,248,32094,714,560
Size548.6 MB 90.3 MB
Events in quadrant A4,226,581619,906
Events in quadrant B4,875,314675,413
Events in quadrant C7,642,126528,324
Events in quadrant D4,031,267578,320

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177192
B0191052
C0272952
D0170502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66853745.594615%
B66853334.981301%
C6686119717.903081%
D66861952.916542%

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 8880 6687 279 279 3.14% 4.17%
B 8880 6687 166 166 1.87% 2.48%
C 8881 6688 1070 1070 12.05% 16.00%
D 8881 6688 137 137 1.54% 2.05%

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 15 174 594951 3520.06 679 661 168.8
A 8 231 414421 2450.75 679 661 168.8
A 0 8 213352 1259.8 679 661 168.8
B 4 81 460580 3191.52 683 657 144.1
B 10 28 419009 2903.05 683 657 144.1
B 4 206 338955 2347.54 683 657 144.1
C 1 241 2093517 12068.45 627 622 173.4
C 15 224 1896409 10931.84 627 622 173.4
C 15 178 305412 1757.54 627 622 173.4
D 11 245 395735 2062.41 666 636 191.6
D 13 170 169730 882.67 666 636 191.6
D 3 12 146512 761.47 666 636 191.6

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