ASTROSAT CZTI

Data Quality Report

Orbit 20190303_A05_104T02_9000002752_level2

Creation date: 2025-11-28T10:08:03.278416
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/AS1A05_104T02_9000002752cztM0_level2.fits modeM0/AS1A05_104T02_9000002752cztM0_level2_quad_clean.evt
Size (bytes)145,788,48099,694,080
Size139.0 MB 95.1 MB
Events in quadrant A903,248532,974
Events in quadrant B881,466540,984
Events in quadrant C890,502514,635
Events in quadrant D750,362440,521

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371160
B0317200
C0303240
D0484050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143248736.094666%
B143242621.829098%
C143242441.703435%
D14324151710.590617%

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 17764 14308 0 0 0.00% 0.00%
B 17764 14320 0 0 0.00% 0.00%
C 17764 14321 0 0 0.00% 0.00%
D 17764 14306 0 0 0.00% 0.00%

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 14 188 909 11.74 234 221 58.6
A 14 204 765 9.28 234 221 58.6
A 0 29 729 8.67 234 221 58.6
B 2 9 705 10.1 232 222 47.8
B 2 8 587 7.63 232 222 47.8
B 3 17 581 7.51 232 222 47.8
C 12 241 621 6.41 235 221 62.4
C 3 126 616 6.33 235 221 62.4
C 7 111 610 6.23 235 221 62.4
D 10 190 584 6.67 214 196 58.2
D 15 46 536 5.85 214 196 58.2
D 1 3 535 5.83 214 196 58.2

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