ASTROSAT CZTI

Data Quality Report

Orbit 20220502_C07_001T07_9000005104_level2

Creation date: 2026-01-02T11:18:09.890526
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/AS1C07_001T07_9000005104cztM0_level2.fits modeM0/AS1C07_001T07_9000005104cztM0_level2_quad_clean.evt
Size (bytes)719,657,280834,125,760
Size686.3 MB 795.5 MB
Events in quadrant A3,802,3183,743,615
Events in quadrant B4,238,3765,439,238
Events in quadrant C4,514,3745,660,493
Events in quadrant D3,818,9245,015,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016140
B016140
C016140
D016140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03846440
B02113210
C01834250
D02120190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A788032789535.398399%
B7880351326.512442%
C7880318362.329861%
D7880344775.681256%

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 110529 78802 0 0 0.00% 0.00%
B 110529 78656 0 0 0.00% 0.00%
C 110529 78739 0 0 0.00% 0.00%
D 110529 78675 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 9 19 3123 8.86 992 935 246.9
A 0 29 3024 8.46 992 935 246.9
A 7 110 3015 8.42 992 935 246.9
B 2 9 3747 12.18 1124 1078 219.1
B 3 80 3234 9.84 1124 1078 219.1
B 2 8 2994 8.75 1124 1078 219.1
C 1 81 3769 8.56 1196 1127 308.7
C 1 80 3670 8.24 1196 1127 308.7
C 3 187 3150 6.55 1196 1127 308.7
D 6 62 2818 6.2 1095 1000 293.3
D 7 3 2814 6.18 1095 1000 293.3
D 10 113 2804 6.15 1095 1000 293.3

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