ASTROSAT CZTI

Data Quality Report

Orbit 14571

Creation date: 2024-06-27T16:56:59.245424
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/AS1A04_089T01_9000002146_14571cztM0_level2.evt modeM0/AS1A04_089T01_9000002146_14571cztM0_level2_quad_clean.evt
Size (bytes)510,791,04065,479,680
Size487.1 MB 62.4 MB
Events in quadrant A3,904,539389,147
Events in quadrant B3,548,397390,471
Events in quadrant C4,131,521372,607
Events in quadrant D3,443,733376,406

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158273
B0146362
C0170432
D0145352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6501891.369020%
B6501971.492078%
C6501681.045993%
D6501640.984464%

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 7547 6503 4 4 0.05% 0.06%
B 7547 6503 13 13 0.17% 0.20%
C 7547 6503 1 1 0.01% 0.02%
D 7547 6503 1 1 0.01% 0.02%

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 8 15 472204 2799.61 829 811 168.4
A 0 23 142181 839.6 829 811 168.4
A 12 189 62007 363.44 829 811 168.4
B 0 189 117504 737.63 827 806 158.2
B 10 16 64804 404.52 827 806 158.2
B 0 219 29703 182.65 827 806 158.2
C 3 233 1005282 5440.64 798 803 184.6
C 14 234 7653 37.1 798 803 184.6
C 13 61 5788 27.0 798 803 184.6
D 12 110 313076 1453.66 804 788 214.8
D 2 152 30571 138.64 804 788 214.8
D 10 199 25826 116.55 804 788 214.8

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