ASTROSAT CZTI

Data Quality Report

Orbit 58684

Creation date: 2026-08-03T11:43:43.554192
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_004T06_9000006594_58684cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58684cztM0_level2_quad_clean.evt
Size (bytes)536,065,92098,003,520
Size511.2 MB 93.5 MB
Events in quadrant A3,230,714673,647
Events in quadrant B5,470,816662,506
Events in quadrant C3,402,079642,196
Events in quadrant D7,209,419513,269

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144522
B0209102
C0146172
D0261932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6828821.200937%
B682878311.467487%
C6827610.893511%
D6827124018.163176%

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 7833 6829 6 6 0.08% 0.09%
B 7833 6829 364 364 4.65% 5.33%
C 7832 6828 11 11 0.14% 0.16%
D 7832 6828 989 989 12.63% 14.48%

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 12 114 130644 689.25 772 753 188.5
A 10 251 58520 306.54 772 753 188.5
A 3 14 35668 185.27 772 753 188.5
B 5 172 2356859 14981.97 730 703 157.3
B 8 234 62834 395.07 730 703 157.3
B 0 186 43844 274.32 730 703 157.3
C 15 1 222142 1084.45 746 739 204.2
C 14 254 138827 676.36 746 739 204.2
C 12 249 49061 236.68 746 739 204.2
D 8 160 1817226 9396.3 684 653 193.3
D 2 249 1699993 8789.9 684 653 193.3
D 3 12 248637 1282.71 684 653 193.3

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