ASTROSAT CZTI

Data Quality Report

Orbit 21162

Creation date: 2024-06-27T18:24:20.007540
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/AS1C04_001T01_9000003126_21162cztM0_level2.evt modeM0/AS1C04_001T01_9000003126_21162cztM0_level2_quad_clean.evt
Size (bytes)480,168,000130,512,960
Size457.9 MB 124.5 MB
Events in quadrant A2,940,686891,547
Events in quadrant B3,330,611919,181
Events in quadrant C3,129,813897,296
Events in quadrant D4,730,078822,365

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126602
B0138312
C0131112
D0182242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6049150.247975%
B6049340.562076%
C6049841.388659%
D60483746.183862%

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 7459 6050 0 0 0.00% 0.00%
B 7459 6050 1 1 0.01% 0.02%
C 7459 6050 6 6 0.08% 0.10%
D 7458 6049 318 318 4.26% 5.26%

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 10089 61.3 759 743 152.5
A 0 226 6597 38.39 759 743 152.5
A 8 6 6034 34.7 759 743 152.5
B 0 189 74678 518.05 774 756 142.7
B 0 244 65026 450.4 774 756 142.7
B 0 190 42920 295.49 774 756 142.7
C 14 238 119591 680.68 754 760 174.6
C 0 10 40338 226.71 754 760 174.6
C 3 233 26808 149.21 754 760 174.6
D 1 52 860186 4942.11 727 707 173.9
D 1 20 432434 2482.48 727 707 173.9
D 1 239 400107 2296.6 727 707 173.9

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