ASTROSAT CZTI

Data Quality Report

Orbit 21448

Creation date: 2024-06-27T18:27:55.043007
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/AS1T03_140T01_9000003160_21448cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21448cztM0_level2_quad_clean.evt
Size (bytes)461,638,08061,925,760
Size440.3 MB 59.1 MB
Events in quadrant A3,071,990369,449
Events in quadrant B3,048,924374,949
Events in quadrant C3,432,136362,573
Events in quadrant D4,017,372345,666

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126561
B0127191
C0140441
D0158411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6041480.794570%
B6041530.877338%
C60411031.705016%
D60411462.416818%

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 7151 6041 0 0 0.00% 0.00%
B 7151 6041 2 2 0.03% 0.03%
C 7151 6041 6 6 0.08% 0.10%
D 7151 6041 91 91 1.27% 1.51%

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 11 47 129952 845.48 762 748 152.8
A 13 254 9847 59.54 762 748 152.8
A 0 226 6597 38.27 762 748 152.8
B 0 229 26974 181.59 763 745 144.4
B 12 111 17130 113.44 763 745 144.4
B 11 111 15098 99.37 763 745 144.4
C 3 233 468178 2758.19 730 734 169.5
C 14 238 116562 683.45 730 734 169.5
C 13 61 5124 25.9 730 734 169.5
D 14 34 412093 2357.95 730 710 174.5
D 1 52 402902 2305.27 730 710 174.5
D 12 235 188268 1075.04 730 710 174.5

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