ASTROSAT CZTI

Data Quality Report

Orbit 24356

Creation date: 2024-06-27T19:05:07.397227
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/AS1A07_145T01_9000003594_24356cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24356cztM0_level2_quad_clean.evt
Size (bytes)682,545,60077,008,320
Size650.9 MB 73.4 MB
Events in quadrant A3,202,717479,198
Events in quadrant B3,258,971487,236
Events in quadrant C3,517,924470,164
Events in quadrant D10,247,733438,142

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138122
B0138682
C0145802
D0349832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6555380.579710%
B6555520.793288%
C65551161.769641%
D6555263740.228833%

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 7540 6556 0 0 0.00% 0.00%
B 7540 6556 0 0 0.00% 0.00%
C 7540 6556 19 19 0.25% 0.29%
D 7540 6556 2336 2336 30.98% 35.63%

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 13 254 10154 55.87 830 812 167.2
A 3 137 7414 39.48 830 812 167.2
A 0 226 7041 37.25 830 812 167.2
B 12 111 19111 116.12 827 807 157.6
B 0 230 17751 107.49 827 807 157.6
B 11 111 17212 104.07 827 807 157.6
C 2 16 145799 771.1 801 807 188.0
C 14 238 128431 678.74 801 807 188.0
C 3 233 94542 498.51 801 807 188.0
D 9 35 3692744 24224.01 625 606 152.4
D 1 52 2999851 19677.96 625 606 152.4
D 7 238 910234 5968.04 625 606 152.4

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